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From kuldeep singh <kuldeep.sing...@gmail.com>
Subject Re: upgrade from 3.4.5 to 3.5.6
Date Mon, 13 Jul 2020 08:36:38 GMT
Hi Team,

I appreciate it if I will get a response as soon as possible, as I am stuck
at this point.

Thanks,
---------------------
Kuldeep Singh Budania



On Mon, Jul 13, 2020 at 11:10 AM kuldeep singh <kuldeep.singh08@gmail.com>
wrote:

> Hi Team,
>
> Server to Server communication is not supported in 3.5.6 version  as per
> below JIRA issue?
>
> https://issues.apache.org/jira/browse/ZOOKEEPER-2639
>
> Thanks,
> ---------------------
> Kuldeep Singh Budania
>
>
>
> On Thu, Jul 2, 2020 at 4:24 PM kuldeep singh <kuldeep.singh08@gmail.com>
> wrote:
>
>> Thanks for the reply.
>>
>> Now my ZKCli cmd is working fine as we use some our customized
>> authentication and we resolve the issue.
>>
>> Now I am going to implement Server to Server communication.
>>
>> Thanks,
>> ---------------------
>> Kuldeep Singh Budania
>>
>>
>>
>> On Thu, Jul 2, 2020 at 3:53 PM Szalay-Bekő Máté <
>> szalay.beko.mate@gmail.com> wrote:
>>
>>> I think SSL is working for you already... If you managed to start the
>>> zkCli.sh and be able to connect to ZooKeeper on the secure port and issue
>>> any kind of command (like: " ls / "), then the wire encryption is working
>>> and your server/client communication is secured by ZooKeeper.
>>>
>>> Why you want to run the following command?
>>> addauth ztpasswd zooadmin:<password>
>>>
>>> Do you also want to configure a superDigest user in ZooKeeper? Please
>>> note
>>> that this command is independent from SSL. If you need to create a
>>> username-password pair for digest authentication then please use the
>>> command in the following way:
>>> addauth digest zooadmin:yourSuperSecretPassword
>>>
>>> Kind regards,
>>> Mate
>>>
>>> On Thu, Jul 2, 2020 at 6:59 AM kuldeep singh <kuldeep.singh08@gmail.com>
>>> wrote:
>>>
>>> > 1. sh zkCli.sh --config /etc/zookeeper -server localhost:2281
>>> >
>>> > 2. addauth ztpasswd zooadmin:<password>
>>> >
>>> >
>>> > Thanks,
>>> > ---------------------
>>> > Kuldeep Singh Budania
>>> >
>>> >
>>> >
>>> > On Thu, Jul 2, 2020 at 9:56 AM kuldeep singh <
>>> kuldeep.singh08@gmail.com>
>>> > wrote:
>>> >
>>> > > Hi Team,
>>> > >
>>> > > Any update on this?
>>> > >
>>> > > Thanks,
>>> > > ---------------------
>>> > > Kuldeep Singh Budania
>>> > >
>>> > >
>>> > >
>>> > > On Wed, Jul 1, 2020 at 6:43 PM kuldeep singh <
>>> kuldeep.singh08@gmail.com>
>>> > > wrote:
>>> > >
>>> > >> Sorry this is my bad, there were server setting like below
>>> > >>
>>> > >> export SERVER_JVMFLAGS="
>>> > >>
>>> > >>
>>> > >>
>>> >
>>> -Dzookeeper.serverCnxnFactory=org.apache.zookeeper.server.NettyServerCnxnFactory
>>> > >>
>>> > >>
>>> -Dzookeeper.ssl.keyStore.location=/root/zookeeper/ssl/testKeyStore.jks
>>> > >> -Dzookeeper.ssl.keyStore.password=testpass
>>> > >>
>>> >
>>> -Dzookeeper.ssl.trustStore.location=/root/zookeeper/ssl/testTrustStore.jks
>>> > >> -Dzookeeper.ssl.trustStore.password=testpass"
>>> > >>
>>> > >>
>>> > >>
>>> > >> export CLIENT_JVMFLAGS="
>>> > >>
>>> > >>
>>> -Dzookeeper.clientCnxnSocket=org.apache.zookeeper.ClientCnxnSocketNetty
>>> > >> -Dzookeeper.client.secure=true
>>> > >>
>>> -Dzookeeper.ssl.keyStore.location=/root/zookeeper/ssl/testKeyStore.jks
>>> > >> -Dzookeeper.ssl.keyStore.password=testpass
>>> > >>
>>> >
>>> -Dzookeeper.ssl.trustStore.location=/root/zookeeper/ssl/testTrustStore.jks
>>> > >> -Dzookeeper.ssl.trustStore.password=testpass"
>>> > >>
>>> > >> I want to have SSL  between client to server communication
>>> > >>
>>> > >> I am already following the same link which you have shared with me
>>> but
>>> > >> that is not working.
>>> > >>
>>> > >> Zoo.cfg
>>> > >>
>>> > >> secureClientPort=2281
>>> > >> initLimit=10
>>> > >> syncLimit=5
>>> > >> dataDir=/var/lib/zookeeper/data
>>> > >> tickTime=2000
>>> > >> autopurge.snapRetainCount=3
>>> > >> autopurge.purgeInterval=1
>>> > >> admin.enableServer=false
>>> > >> standaloneEnabled=false
>>> > >> jute.maxbuffer=2147483648
>>> > >> serverCnxnFactory=org.apache.zookeeper.server.NettyServerCnxnFactory
>>> > >> server.1=host1_priv:10288:10388
>>> > >> server.2=host2_priv:10288:10388
>>> > >> server.3=host3_priv:10288:10388
>>> > >>
>>> > >>
>>> > >> command to connect using zkcli
>>> > >>
>>> > >> 1. zkcli zoo.cfg localhost:2281
>>> > >> 2. addauth ztpasswd usernaem:password
>>> > >>
>>> > >> after second step we are getting below error
>>> > >>
>>> > >> WatchedEvent state:AuthFailed type:None path:null
>>> > >>
>>> > >>
>>> > >> Zookeeper logs :- *2020-07-01 07:38:09,342 - WARN
>>> > >> [nioEventLoopGroup-4-2:ZooKeeperServer@1119] - No authentication
>>> > provider
>>> > >> for scheme: ztpasswd has x509 ip digest*
>>> > >>
>>> > >> Thanks,
>>> > >> ---------------------
>>> > >> Kuldeep Singh Budania
>>> > >>
>>> > >>
>>> > >>
>>> > >> On Wed, Jul 1, 2020 at 6:25 PM Szalay-Bekő Máté <
>>> > >> szalay.beko.mate@gmail.com> wrote:
>>> > >>
>>> > >>> >  No authentication provider for scheme: ztpasswd has x509 ip
>>> digest*
>>> > >>>
>>> > >>> This suggest you have some configuration error... Where did you
>>> use the
>>> > >>> "ztpasswd" string in your configs / commands?
>>> > >>>
>>> > >>> On Wed, Jul 1, 2020 at 2:53 PM Szalay-Bekő Máté <
>>> > >>> szalay.beko.mate@gmail.com>
>>> > >>> wrote:
>>> > >>>
>>> > >>> > > My ZK server  is up and running in secure mode
>>> > >>> >
>>> > >>> > What is your goal? You want to setup client-server SSL
>>> connection?
>>> > >>> >
>>> > >>> > see:
>>> > >>> >
>>> > >>>
>>> >
>>> https://cwiki.apache.org/confluence/display/ZOOKEEPER/ZooKeeper+SSL+User+Guide
>>> > >>> >
>>> > >>> > (or you want to have both SSL and SASL enabled?)
>>> > >>> >
>>> > >>> > Anyway, please remove the following line from the
>>> SERVER_JVMFLAGS:
>>> > >>> >
>>> > -Dzookeeper.clientCnxnSocket=org.apache.zookeeper.ClientCnxnSocketNetty
>>> > >>> > This is a configuration that makes sense only for the ZooKeeper
>>> > client,
>>> > >>> > not for the server. For the server, use the following:
>>> > >>> >
>>> > >>> >
>>> > >>>
>>> >
>>> -Dzookeeper.serverCnxnFactory=org.apache.zookeeper.server.NettyServerCnxnFactory
>>> > >>> >
>>> > >>> > If it doesn't solve the issue, then can you please send your
>>> zoo.cfg
>>> > >>> file?
>>> > >>> > Also can you please send the zkCli command you execute? (you
>>> need to
>>> > >>> > connect to the secure ZooKeeper port, unless portUnification is
>>> > >>> enabled)
>>> > >>> >
>>> > >>> > Kind regards,
>>> > >>> > Mate
>>> > >>> >
>>> > >>> > On Wed, Jul 1, 2020 at 9:48 AM kuldeep singh <
>>> > >>> kuldeep.singh08@gmail.com>
>>> > >>> > wrote:
>>> > >>> >
>>> > >>> >> Hi,
>>> > >>> >>
>>> > >>> >> we have done below changes in java.env file
>>> > >>> >>
>>> > >>> >> export SERVER_JVMFLAGS="
>>> > >>> >>
>>> > >>> >>
>>> > >>>
>>> -Dzookeeper.clientCnxnSocket=org.apache.zookeeper.ClientCnxnSocketNetty
>>> > >>> >>
>>> > -Dzookeeper.ssl.keyStore.location=/root/zookeeper/ssl/testKeyStore.jks
>>> > >>> >> -Dzookeeper.ssl.keyStore.password=testpass
>>> > >>> >>
>>> > >>>
>>> >
>>> -Dzookeeper.ssl.trustStore.location=/root/zookeeper/ssl/testTrustStore.jks
>>> > >>> >> -Dzookeeper.ssl.trustStore.password=testpass"
>>> > >>> >>
>>> > >>> >>
>>> > >>> >>
>>> > >>> >> export CLIENT_JVMFLAGS="
>>> > >>> >>
>>> > >>> >>
>>> > >>>
>>> -Dzookeeper.clientCnxnSocket=org.apache.zookeeper.ClientCnxnSocketNetty
>>> > >>> >> -Dzookeeper.client.secure=true
>>> > >>> >>
>>> > -Dzookeeper.ssl.keyStore.location=/root/zookeeper/ssl/testKeyStore.jks
>>> > >>> >> -Dzookeeper.ssl.keyStore.password=testpass
>>> > >>> >>
>>> > >>>
>>> >
>>> -Dzookeeper.ssl.trustStore.location=/root/zookeeper/ssl/testTrustStore.jks
>>> > >>> >> -Dzookeeper.ssl.trustStore.password=testpass"
>>> > >>> >>
>>> > >>> >> I have started the ZK server and it is up without any issue.
>>> > >>> >>
>>> > >>> >> But now when I login to ZkCli then it gives the below error.
>>> > >>> >>
>>> > >>> >> WatchedEvent state:AuthFailed type:None path:null
>>> > >>> >>
>>> > >>> >>
>>> > >>> >> Zookeeper logs :- *2020-07-01 07:38:09,342 - WARN
>>> > >>> >> [nioEventLoopGroup-4-2:ZooKeeperServer@1119] - No
>>> authentication
>>> > >>> provider
>>> > >>> >> for scheme: ztpasswd has x509 ip digest*
>>> > >>> >>
>>> > >>> >> Please help me on this issue
>>> > >>> >>
>>> > >>> >> Thanks,
>>> > >>> >> ---------------------
>>> > >>> >> Kuldeep Singh Budania
>>> > >>> >> Software Architect
>>> > >>> >>
>>> > >>> >>
>>> > >>> >> On Wed, Jul 1, 2020 at 12:05 PM kuldeep singh <
>>> > >>> kuldeep.singh08@gmail.com>
>>> > >>> >> wrote:
>>> > >>> >>
>>> > >>> >> > Hi,
>>> > >>> >> >
>>> > >>> >> > My ZK server  is up and running in secure mode, But When I am
>>> > >>> trying to
>>> > >>> >> > connect to the ZK server using ZKCli, it gives the below
>>> error.
>>> > >>> >> >
>>> > >>> >> > WatchedEvent state:AuthFailed type:None path:null
>>> > >>> >> >
>>> > >>> >> >
>>> > >>> >> > Zookeeper logs :- *2020-07-01 07:38:09,342 - WARN
>>> > >>> >> > [nioEventLoopGroup-4-2:ZooKeeperServer@1119] - No
>>> authentication
>>> > >>> >> provider
>>> > >>> >> > for scheme: ztpasswd has x509 ip digest*
>>> > >>> >> >
>>> > >>> >> > Can someone please help me on this issue. we are using the
>>> 3.5.6
>>> > >>> >> version.
>>> > >>> >> >
>>> > >>> >> > I appreciate if I will get a response as soon as possible, as
>>> I am
>>> > >>> stuck
>>> > >>> >> > at this point.
>>> > >>> >> >
>>> > >>> >> > Thanks,
>>> > >>> >> > ---------------------
>>> > >>> >> > Kuldeep Singh Budania
>>> > >>> >> > Software Architect
>>> > >>> >> >
>>> > >>> >> >
>>> > >>> >> >
>>> > >>> >> > On Thu, Jun 25, 2020 at 11:54 AM Enrico Olivelli - Diennea
>>> > >>> >> > <enrico.olivelli@diennea.com.invalid> wrote:
>>> > >>> >> >
>>> > >>> >> >> I mean in zoo.cfg
>>> > >>> >> >> Not as a system property
>>> > >>> >> >>
>>> > >>> >> >> Enrico
>>> > >>> >> >>
>>> > >>> >> >> Il giorno 25/06/20, 08:19 "Enrico Olivelli - Diennea" <
>>> > >>> >> >> enrico.olivelli@diennea.com.INVALID> ha scritto:
>>> > >>> >> >>
>>> > >>> >> >>     Hi
>>> > >>> >> >>     You have to enable Netty on the server side
>>> > >>> >> >>
>>> > >>> >> >>     Something like:
>>> > >>> >> >>
>>> > >>> >>
>>> > serverCnxnFactory=org.apache.zookeeper.server.NettyServerCnxnFactory
>>> > >>> >> >>
>>> > >>> >> >>     Hope that helps
>>> > >>> >> >>     Enrico
>>> > >>> >> >>
>>> > >>> >> >>     Il giorno 24/06/20, 19:17 "kuldeep singh" <
>>> > >>> >> kuldeep.singh08@gmail.com>
>>> > >>> >> >> ha scritto:
>>> > >>> >> >>
>>> > >>> >> >>         Hi,
>>> > >>> >> >>
>>> > >>> >> >>         I got below error while setting SSL properties in
>>> > zkEnv.sh
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> ==========================================================================================
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,864 - INFO
>>> > [main:QuorumPeerConfig@133]
>>> > >>> -
>>> > >>> >> >> Reading
>>> > >>> >> >>         configuration from: /etc/zookeeper/zoo.cfg
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,874 - INFO
>>> > [main:QuorumPeerConfig@385]
>>> > >>> -
>>> > >>> >> >>         clientPortAddress is 0.0.0.0/0.0.0.0:10181
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,874 - INFO
>>> > [main:QuorumPeerConfig@399]
>>> > >>> -
>>> > >>> >> >>         secureClientPortAddress is 0.0.0.0/0.0.0.0:2281
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,878 - INFO  [main:X509Util@79] -
>>> > >>> Setting
>>> > >>> >> -D
>>> > >>> >> >>         jdk.tls.rejectClientInitiatedRenegotiation=true to
>>> > disable
>>> > >>> >> >> client-initiated
>>> > >>> >> >>         TLS renegotiation
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,897 - INFO
>>> > >>> [main:DatadirCleanupManager@78]
>>> > >>> >> -
>>> > >>> >> >>         autopurge.snapRetainCount set to 3
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,897 - INFO
>>> > >>> [main:DatadirCleanupManager@79]
>>> > >>> >> -
>>> > >>> >> >>         autopurge.purgeInterval set to 1
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,898 - INFO  [
>>> > >>> >> >>         PurgeTask:DatadirCleanupManager$PurgeTask@138] -
>>> Purge
>>> > >>> task
>>> > >>> >> >> started.
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,899 - INFO  [main:ManagedUtil@46]
>>> -
>>> > >>> Log4j
>>> > >>> >> >> found with
>>> > >>> >> >>         jmx enabled.
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,903 - INFO
>>> > >>> [PurgeTask:FileTxnSnapLog@103]
>>> > >>> >> -
>>> > >>> >> >>         zookeeper.snapshot.trust.empty : false
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,910 - INFO  [
>>> > >>> >> >>         PurgeTask:DatadirCleanupManager$PurgeTask@144] -
>>> Purge
>>> > >>> task
>>> > >>> >> >> completed.
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,975 - INFO
>>> [main:QuorumPeerMain@141
>>> > ]
>>> > >>> -
>>> > >>> >> >> Starting quorum
>>> > >>> >> >>         peer
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,983 - INFO
>>> > [main:ServerCnxnFactory@135]
>>> > >>> -
>>> > >>> >> >> Using
>>> > >>> >> >>         org.apache.zookeeper.server.NIOServerCnxnFactory as
>>> > server
>>> > >>> >> >> connection
>>> > >>> >> >>         factory
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,986 - INFO
>>> > >>> [main:NIOServerCnxnFactory@673]
>>> > >>> >> -
>>> > >>> >> >>         Configuring NIO connection handler with 10s
>>> sessionless
>>> > >>> >> >> connection timeout,
>>> > >>> >> >>         2 selector thread(s), 16 worker threads, and 64 kB
>>> direct
>>> > >>> >> buffers.
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,992 - INFO
>>> > >>> [main:NIOServerCnxnFactory@686
>>> > >>> >> ]
>>> > >>> >> >> - binding
>>> > >>> >> >>         to port 0.0.0.0/0.0.0.0:10181
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,994 - INFO
>>> > [main:ServerCnxnFactory@135]
>>> > >>> -
>>> > >>> >> >> Using
>>> > >>> >> >>         org.apache.zookeeper.server.NIOServerCnxnFactory as
>>> > server
>>> > >>> >> >> connection
>>> > >>> >> >>         factory
>>> > >>> >> >>
>>> > >>> >> >>         2020-06-24 15:49:35,995 - ERROR
>>> [main:QuorumPeerMain@101
>>> > ]
>>> > >>> -
>>> > >>> >> >> Unexpected
>>> > >>> >> >>         exception, exiting abnormally
>>> > >>> >> >>
>>> > >>> >> >>         java.lang.UnsupportedOperationException: SSL isn't
>>> > >>> supported in
>>> > >>> >> >>         NIOServerCnxn
>>> > >>> >> >>
>>> > >>> >> >>                 at
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.zookeeper.server.NIOServerCnxnFactory.configure(NIOServerCnxnFactory.java:644)
>>> > >>> >> >>
>>> > >>> >> >>                 at
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:155)
>>> > >>> >> >>
>>> > >>> >> >>                 at
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:123)
>>> > >>> >> >>
>>> > >>> >> >>                 at
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:82)
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>         I have set the following properties in
>>> SERVER_JVMFLAGS in
>>> > >>> >> >> zkEnv.sh file  :
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> "-Dzookeeper.serverCnxnFactory=org.apache.zookeeper.server.NettyServerCnxnFactory
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> -Dzookeeper.ssl.keyStore.location=/var/opt/vs/SecureInterface/keystore/CassSpkkeystore.p12
>>> > >>> >> >>         -Dzookeeper.ssl.keyStore.password=EvaiKiO1@123456
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> -Dzookeeper.ssl.trustStore.location=/var/opt/vs/SecureInterface/keystore/CassSpkTrustStore.jks
>>> > >>> >> >>         -Dzookeeper.ssl.trustStore.password=EvaiKiO1@123456"
>>> > >>> >> >>
>>> > >>> >> >>         Thanks,
>>> > >>> >> >>         ---------------------
>>> > >>> >> >>         Kuldeep Singh Budania
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>         On Mon, Jun 22, 2020 at 8:08 PM Jordan Zimmerman <
>>> > >>> >> >> jordan@jordanzimmerman.com>
>>> > >>> >> >>         wrote:
>>> > >>> >> >>
>>> > >>> >> >>         > It's the same as the normal ZooKeeper client:
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> https://zookeeper.apache.org/doc/r3.6.1/zookeeperAdmin.html#sc_authOptions
>>> > >>> >> >>         > <
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> https://zookeeper.apache.org/doc/r3.6.1/zookeeperAdmin.html#sc_authOptions
>>> > >>> >> >>         > >
>>> > >>> >> >>         >
>>> > >>> >> >>         > -Jordan
>>> > >>> >> >>         >
>>> > >>> >> >>         > > On Jun 22, 2020, at 5:50 AM, kuldeep singh <
>>> > >>> >> >> kuldeep.singh08@gmail.com>
>>> > >>> >> >>         > wrote:
>>> > >>> >> >>         > >
>>> > >>> >> >>         > > Hi Team,
>>> > >>> >> >>         > > How we will do secure communication between the
>>> > Curator
>>> > >>> >> >> framework and
>>> > >>> >> >>         > > zookeeper 3.5.6 ?
>>> > >>> >> >>         > > I didn't get any solution right now.
>>> > >>> >> >>         > > I appreciate it if someone could help me with the
>>> > same.
>>> > >>> >> >>         > >
>>> > >>> >> >>         > > Thanks,
>>> > >>> >> >>         > > ---------------------
>>> > >>> >> >>         > > Kuldeep Singh Budania
>>> > >>> >> >>         > > Software Architect
>>> > >>> >> >>         > >
>>> > >>> >> >>         > >
>>> > >>> >> >>         > > On Fri, Apr 17, 2020 at 4:53 PM Szalay-Bekő Máté
>>> <
>>> > >>> >> >>         > szalay.beko.mate@gmail.com>
>>> > >>> >> >>         > > wrote:
>>> > >>> >> >>         > >
>>> > >>> >> >>         > >> Hello Kuldeep,
>>> > >>> >> >>         > >>
>>> > >>> >> >>         > >> did you download the source from the ZooKeeper
>>> > >>> webpage, or
>>> > >>> >> >> checked out
>>> > >>> >> >>         > from
>>> > >>> >> >>         > >> git?
>>> > >>> >> >>         > >> Anyway, the following commands should work:
>>> > >>> >> >>         > >>
>>> > >>> >> >>         > >> wget
>>> > >>> >> >>         > >>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> https://downloads.apache.org/zookeeper/zookeeper-3.5.7/apache-zookeeper-3.5.7.tar.gz
>>> > >>> >> >>         > >> tar xzvf ./apache-zookeeper-3.5.7.tar.gz
>>> > >>> >> >>         > >> cd apache-zookeeper-3.5.7
>>> > >>> >> >>         > >> mvn clean install -DskipTests
>>> > >>> >> >>         > >>
>>> > >>> >> >>         > >> I tested it with OpenJDK 8u424 and maven 3.6.0.
>>> > >>> >> >>         > >>
>>> > >>> >> >>         > >> Kind regards,
>>> > >>> >> >>         > >> Mate
>>> > >>> >> >>         > >>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         > >> On Fri, Apr 17, 2020 at 12:51 PM kuldeep singh <
>>> > >>> >> >>         > kuldeep.singh08@gmail.com>
>>> > >>> >> >>         > >> wrote:
>>> > >>> >> >>         > >>
>>> > >>> >> >>         > >>> Hi All,
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>> I have download the zookeeper source code and
>>> run
>>> > >>> the mvn
>>> > >>> >> >> command for
>>> > >>> >> >>         > >>> packaging but get problem on "zookeeper-server"
>>> > >>> >> directory.
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>> *command :- mvn clean package*
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>> [ERROR] Failed to execute goal
>>> > >>> >> >>         > >>>
>>> > >>> >> org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile
>>> > >>> >> >>         > >>> (default-compile) on project zookeeper: Fatal
>>> error
>>> > >>> >> >> compiling:
>>> > >>> >> >>         > >>> java.lang.NullPointerException -> [Help 1]
>>> > >>> >> >>         > >>>
>>> > >>> org.apache.maven.lifecycle.LifecycleExecutionException:
>>> > >>> >> >> Failed to
>>> > >>> >> >>         > execute
>>> > >>> >> >>         > >>> goal
>>> > >>> >> >> org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile
>>> > >>> >> >>         > >>> (default-compile) on project zookeeper: Fatal
>>> error
>>> > >>> >> >> compiling
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:108)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:76)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:116)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         >
>>> > >>> >> org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:361)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >> org.apache.maven.DefaultMaven.execute(DefaultMaven.java:155)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >> org.apache.maven.cli.MavenCli.execute(MavenCli.java:584)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >> org.apache.maven.cli.MavenCli.doMain(MavenCli.java:213)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >> org.apache.maven.cli.MavenCli.main(MavenCli.java:157)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >> sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> java.lang.reflect.Method.invoke(Method.java:498)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
>>> > >>> >> >>         > >>> Caused by:
>>> > >>> >> org.apache.maven.plugin.MojoExecutionException:
>>> > >>> >> >> Fatal error
>>> > >>> >> >>         > >>> compiling
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:1140)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:188)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:133)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
>>> > >>> >> >>         > >>>        ... 19 more
>>> > >>> >> >>         > >>> Caused by:
>>> > >>> >> org.codehaus.plexus.compiler.CompilerException:
>>> > >>> >> >>         > >>> java.lang.NullPointerException
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:173)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile(JavacCompiler.java:174)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:1129)
>>> > >>> >> >>         > >>>        ... 22 more
>>> > >>> >> >>         > >>> Caused by: java.lang.RuntimeException:
>>> > >>> >> >> java.lang.NullPointerException
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >> com.sun.tools.javac.main.Main.compile(Main.java:559)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:126)
>>> > >>> >> >>         > >>>        ... 24 more
>>> > >>> >> >>         > >>> Caused by: java.lang.NullPointerException
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> com.sun.tools.javac.model.JavacTypes.getOverriddenMethods(JavacTypes.java:306)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> com.sun.tools.doclint.Env.setCurrent(Env.java:155)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >> com.sun.tools.doclint.Checker.scan(Checker.java:144)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >> com.sun.tools.doclint.DocLint$2.visitDecl(DocLint.java:285)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.doclint.DocLint$DeclScanner.visitClass(DocLint.java:359)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.doclint.DocLint$DeclScanner.visitClass(DocLint.java:346)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:720)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:68)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:81)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > com.sun.source.util.TreeScanner.visitNewClass(TreeScanner.java:280)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1532)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:68)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:81)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > com.sun.source.util.TreeScanner.visitVariable(TreeScanner.java:153)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> com.sun.tools.doclint.DocLint$DeclScanner.visitVariable(DocLint.java:373)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> com.sun.tools.doclint.DocLint$DeclScanner.visitVariable(DocLint.java:346)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:864)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:68)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:81)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >> com.sun.source.util.TreeScanner.scan(TreeScanner.java:91)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:99)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>
>>> > >>> >> >>
>>> com.sun.source.util.TreeScanner.visitClass(TreeScanner.java:133)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.doclint.DocLint$DeclScanner.visitClass(DocLint.java:360)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.doclint.DocLint$DeclScanner.visitClass(DocLint.java:346)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:720)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:68)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >> com.sun.source.util.TreeScanner.scan(TreeScanner.java:91)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:99)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> com.sun.source.util.TreeScanner.visitCompilationUnit(TreeScanner.java:120)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> com.sun.tools.doclint.DocLint$DeclScanner.visitCompilationUnit(DocLint.java:354)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> com.sun.tools.doclint.DocLint$DeclScanner.visitCompilationUnit(DocLint.java:346)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:550)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:68)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >> com.sun.tools.doclint.DocLint$3.started(DocLint.java:296)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> com.sun.tools.javac.api.ClientCodeWrapper$WrappedTaskListener.started(ClientCodeWrapper.java:668)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> com.sun.tools.javac.api.MultiTaskListener.started(MultiTaskListener.java:103)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1240)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:901)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > >>>
>>> com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:860)
>>> > >>> >> >>         > >>>        at
>>> > >>> >> >> com.sun.tools.javac.main.Main.compile(Main.java:523)
>>> > >>> >> >>         > >>>        ... 27 more
>>> > >>> >> >>         > >>> [ERROR]
>>> > >>> >> >>         > >>> [ERROR] Re-run Maven using the -X switch to
>>> enable
>>> > >>> full
>>> > >>> >> >> debug logging.
>>> > >>> >> >>         > >>> [ERROR]
>>> > >>> >> >>         > >>> [ERROR] For more information about the errors
>>> and
>>> > >>> >> possible
>>> > >>> >> >> solutions,
>>> > >>> >> >>         > >>> please read the following articles:
>>> > >>> >> >>         > >>> [ERROR] [Help 1]
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>> Can someone help me on this issue?
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>> Thanks,
>>> > >>> >> >>         > >>> ---------------------
>>> > >>> >> >>         > >>> Kuldeep Singh Budania
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>> On Sat, Apr 4, 2020 at 5:57 PM Szalay-Bekő
>>> Máté <
>>> > >>> >> >>         > >>> szalay.beko.mate@gmail.com>
>>> > >>> >> >>         > >>> wrote:
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>>> these exceptions can mean many things... I
>>> think
>>> > >>> this
>>> > >>> >> can
>>> > >>> >> >> be even
>>> > >>> >> >>         > >> normal
>>> > >>> >> >>         > >>>> duding rolling restart (as some connections
>>> get
>>> > >>> broken
>>> > >>> >> in
>>> > >>> >> >> this case)
>>> > >>> >> >>         > >>>>
>>> > >>> >> >>         > >>>> However, I saw cases already when exceptions
>>> like
>>> > >>> these
>>> > >>> >> >> killed
>>> > >>> >> >>         > receiver
>>> > >>> >> >>         > >>> or
>>> > >>> >> >>         > >>>> sender threads in QuorumCnxManager / Leader
>>> > >>> Election in
>>> > >>> >> >> such a way
>>> > >>> >> >>         > that
>>> > >>> >> >>         > >>>> they were not able to recover, so the node was
>>> > >>> unable to
>>> > >>> >> >> connect to
>>> > >>> >> >>         > any
>>> > >>> >> >>         > >>>> quorum until restart. I remember seeing this
>>> in
>>> > 3.4
>>> > >>> too.
>>> > >>> >> >>         > >>>>
>>> > >>> >> >>         > >>>> Do you see these exceptions in the second
>>> server
>>> > >>> (the
>>> > >>> >> one
>>> > >>> >> >> which you
>>> > >>> >> >>         > >> just
>>> > >>> >> >>         > >>>> upgraded in step 3)?
>>> > >>> >> >>         > >>>> Is this issue reproducible?
>>> > >>> >> >>         > >>>>
>>> > >>> >> >>         > >>>> What is the tickTime and initLimit you use?
>>> Maybe
>>> > >>> the
>>> > >>> >> >> server just
>>> > >>> >> >>         > >> require
>>> > >>> >> >>         > >>>> more time to sync?
>>> > >>> >> >>         > >>>>
>>> > >>> >> >>         > >>>> I would need more logs to really see what
>>> > happened.
>>> > >>> Can
>>> > >>> >> >> you create a
>>> > >>> >> >>         > >> Jira
>>> > >>> >> >>         > >>>> issue and upload the logs and also the
>>> ZooKeeper
>>> > >>> >> configs?
>>> > >>> >> >> I am happy
>>> > >>> >> >>         > to
>>> > >>> >> >>         > >>>> take a closer look.
>>> > >>> >> >>         > >>>> (if you need to re-run the test to collect the
>>> > logs,
>>> > >>> >> then
>>> > >>> >> >> enabling
>>> > >>> >> >>         > >> DEBUG
>>> > >>> >> >>         > >>>> logs would be great. The INFO level logs are
>>> > usually
>>> > >>> >> >> enough for these
>>> > >>> >> >>         > >>>> problems, but one can never know...)
>>> > >>> >> >>         > >>>>
>>> > >>> >> >>         > >>>> Kind regards,
>>> > >>> >> >>         > >>>> Mate
>>> > >>> >> >>         > >>>>
>>> > >>> >> >>         > >>>>
>>> > >>> >> >>         > >>>> On Fri, Apr 3, 2020 at 10:05 AM kuldeep singh
>>> <
>>> > >>> >> >>         > >> kuldeep.singh08@gmail.com
>>> > >>> >> >>         > >>>>
>>> > >>> >> >>         > >>>> wrote:
>>> > >>> >> >>         > >>>>
>>> > >>> >> >>         > >>>>> Hi Team,
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>> I have done some POC on rolling upgrade and
>>> found
>>> > >>> below
>>> > >>> >> >> result.
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>>   1. On 1st node upgrade zookeeper . Traffic
>>> was
>>> > >>> >> running
>>> > >>> >> >> fine
>>> > >>> >> >>         > >> because
>>> > >>> >> >>         > >>> 2
>>> > >>> >> >>         > >>>>>   nodes are already on old zookeeper.
>>> > >>> >> >>         > >>>>>   2. On 1st node upgrade our application and
>>> > didn’t
>>> > >>> >> find
>>> > >>> >> >> any issue
>>> > >>> >> >>         > >>>>>   3. On 2nd node upgrade zookeeper but got
>>> below
>>> > >>> error
>>> > >>> >> >> and zookeeper
>>> > >>> >> >>         > >>> is
>>> > >>> >> >>         > >>>>>   not taking any requests
>>> > >>> >> >>         > >>>>>   4.
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>> java.io.EOFException
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>>        at
>>> > >>> >> >> java.io.DataInputStream.readInt(DataInputStream.java:392)
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>>        at
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.zookeeper.server.quorum.QuorumCnxManager$RecvWorker.run(QuorumCnxManager.java:747)
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>> 2020-03-30 14:19:55,587 - WARN
>>> > >>> >> >>         > >>>>> [RecvWorker:1:QuorumCnxManager$RecvWorker@765]
>>> -
>>> > >>> >> >> Interrupting
>>> > >>> >> >>         > >>> SendWorker
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>> 2020-03-30 14:19:55,588 - ERROR
>>> [LearnerHandler-/
>>> > >>> >> >> 192.168.44.73:33754
>>> > >>> >> >>         > >>>>> :LearnerHandler@562] - Unexpected exception
>>> > >>> causing
>>> > >>> >> >> shutdown while
>>> > >>> >> >>         > >>> sock
>>> > >>> >> >>         > >>>>> still open
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>> java.io.EOFException
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>>        at
>>> > >>> >> >> java.io.DataInputStream.readInt(DataInputStream.java:392)
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>>        at
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>
>>> > >>>
>>> org.apache.jute.BinaryInputArchive.readInt(BinaryInputArchive.java:63)
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>>        at
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.zookeeper.server.quorum.QuorumPacket.deserialize(QuorumPacket.java:83)
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>>        at
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.jute.BinaryInputArchive.readRecord(BinaryInputArchive.java:108)
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>>        at
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >>
>>> > >>>
>>> >
>>> org.apache.zookeeper.server.quorum.LearnerHandler.run(LearnerHandler.java:476)
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>> 2020-03-30 14:19:55,588 - WARN
>>> > >>> >> >>         > >>>>> [SendWorker:1:QuorumCnxManager$SendWorker@679]
>>> -
>>> > >>> >> >> Interrupted while
>>> > >>> >> >>         > >>>> waiting
>>> > >>> >> >>         > >>>>> for message on queue
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>> Please let me know is this the known issue or
>>> > this
>>> > >>> is
>>> > >>> >> >> different issue
>>> > >>> >> >>         > >>>> which
>>> > >>> >> >>         > >>>>> is mention in Apache zookeeper documentation
>>> when
>>> > >>> >> >> upgrading from
>>> > >>> >> >>         > >> 3.4.5
>>> > >>> >> >>         > >>> to
>>> > >>> >> >>         > >>>>> 3.5.6
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>> Thanks,
>>> > >>> >> >>         > >>>>> ---------------------
>>> > >>> >> >>         > >>>>> Kuldeep Singh Budania
>>> > >>> >> >>         > >>>>> Software Architect
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>> On Sun, Mar 29, 2020 at 9:06 AM Alexander
>>> Shraer
>>> > <
>>> > >>> >> >> shralex@gmail.com>
>>> > >>> >> >>         > >>>>> wrote:
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>>> +1 to what Mate said (I wrote the quoted
>>> > >>> >> instructions).
>>> > >>> >> >>         > >>>>>>
>>> > >>> >> >>         > >>>>>>
>>> > >>> >> >>         > >>>>>>
>>> > >>> >> >>         > >>>>>> On Tue, Mar 24, 2020 at 7:03 AM Szalay-Bekő
>>> > Máté <
>>> > >>> >> >>         > >>>>>> szalay.beko.mate@gmail.com>
>>> > >>> >> >>         > >>>>>> wrote:
>>> > >>> >> >>         > >>>>>>
>>> > >>> >> >>         > >>>>>>> Hi Kuldeep,
>>> > >>> >> >>         > >>>>>>>
>>> > >>> >> >>         > >>>>>>> I just want to provide you some background
>>> info
>>> > >>> about
>>> > >>> >> >> our
>>> > >>> >> >>         > >>>>> documentation.
>>> > >>> >> >>         > >>>>>>> The reason to upgrade to 3.4.6 first is to
>>> > avoid
>>> > >>> the
>>> > >>> >> >> following
>>> > >>> >> >>         > >>> error:
>>> > >>> >> >>         > >>>>>>>
>>> > >>> >> >>         > >>>>>>>> 2013-01-30 11:32:10,663 [myid:2] - WARN
>>> > >>> [localhost/
>>> > >>> >> >>         > >>> 127.0.0.1:2784
>>> > >>> >> >>         > >>>>>>> :QuorumCnxManager@349] - Invalid server
>>> id:
>>> > >>> -65536
>>> > >>> >> >>         > >>>>>>>
>>> > >>> >> >>         > >>>>>>> This error comes because of the protocol
>>> > changes
>>> > >>> >> between
>>> > >>> >> >>         > >> ZooKeeper
>>> > >>> >> >>         > >>>>> server
>>> > >>> >> >>         > >>>>>>> nodes during connection initiation for
>>> leader
>>> > >>> >> election.
>>> > >>> >> >> In
>>> > >>> >> >>         > >>> ZooKeeper
>>> > >>> >> >>         > >>>>> 3.5
>>> > >>> >> >>         > >>>>>> a
>>> > >>> >> >>         > >>>>>>> protocol version was introduced (see
>>> > >>> ZOOKEEPER-107)
>>> > >>> >> and
>>> > >>> >> >> since
>>> > >>> >> >>         > >> that
>>> > >>> >> >>         > >>>> time
>>> > >>> >> >>         > >>>>>> the
>>> > >>> >> >>         > >>>>>>> fist long value sent in the initial
>>> message is
>>> > >>> not
>>> > >>> >> the
>>> > >>> >> >> server ID
>>> > >>> >> >>         > >>> but
>>> > >>> >> >>         > >>>>> the
>>> > >>> >> >>         > >>>>>>> protocol version (-65536). In ZooKeeper
>>> 3.4.6
>>> > we
>>> > >>> made
>>> > >>> >> >> the old 3.4
>>> > >>> >> >>         > >>>>>>> ZooKeepers backward compatible, so they are
>>> > able
>>> > >>> to
>>> > >>> >> >> parse both
>>> > >>> >> >>         > >> the
>>> > >>> >> >>         > >>>> old
>>> > >>> >> >>         > >>>>>> and
>>> > >>> >> >>         > >>>>>>> the new protocol format (see
>>> ZOOKEEPER-1633).
>>> > >>> This
>>> > >>> >> >> issue happens
>>> > >>> >> >>         > >>> only
>>> > >>> >> >>         > >>>>>> when
>>> > >>> >> >>         > >>>>>>> you need to use old (3.4.0 - 3.4.5) and new
>>> > >>> (3.5.0+)
>>> > >>> >> >> ZooKeeper
>>> > >>> >> >>         > >>>> servers
>>> > >>> >> >>         > >>>>>>> together in the same cluster. During a
>>> rolling
>>> > >>> >> upgrade,
>>> > >>> >> >> this is
>>> > >>> >> >>         > >>>> usually
>>> > >>> >> >>         > >>>>>> the
>>> > >>> >> >>         > >>>>>>> case to have old and new ZooKeepers present
>>> > >>> together.
>>> > >>> >> >>         > >>>>>>>
>>> > >>> >> >>         > >>>>>>> The fact that you haven't seen any issues
>>> might
>>> > >>> be
>>> > >>> >> >> caused by the
>>> > >>> >> >>         > >>>> order
>>> > >>> >> >>         > >>>>> of
>>> > >>> >> >>         > >>>>>>> the servers. In ZooKeeper the connection
>>> > >>> initiation
>>> > >>> >> >> between the
>>> > >>> >> >>         > >>>> servers
>>> > >>> >> >>         > >>>>>>> during the leader election follows a
>>> specific
>>> > >>> rule.
>>> > >>> >> As
>>> > >>> >> >> far as I
>>> > >>> >> >>         > >>>>> remember
>>> > >>> >> >>         > >>>>>>> always the server with the larger ID 'wins
>>> the
>>> > >>> >> >> challenge', so it
>>> > >>> >> >>         > >> is
>>> > >>> >> >>         > >>>>>>> possible, that the old server didn't need
>>> to
>>> > >>> parse
>>> > >>> >> any
>>> > >>> >> >> initial
>>> > >>> >> >>         > >>>> message
>>> > >>> >> >>         > >>>>>> (if
>>> > >>> >> >>         > >>>>>>> it had the largest ID) and this is why you
>>> > >>> haven't
>>> > >>> >> seen
>>> > >>> >> >> the
>>> > >>> >> >>         > >> issue.
>>> > >>> >> >>         > >>>> Also
>>> > >>> >> >>         > >>>>>>> having 2 nodes up from the 3 nodes cluster
>>> > still
>>> > >>> >> makes
>>> > >>> >> >> the
>>> > >>> >> >>         > >> cluster
>>> > >>> >> >>         > >>>> work
>>> > >>> >> >>         > >>>>>> (so
>>> > >>> >> >>         > >>>>>>> you should also check if all the servers
>>> are
>>> > >>> part of
>>> > >>> >> >> the quorum).
>>> > >>> >> >>         > >>>>>>>
>>> > >>> >> >>         > >>>>>>> I agree with Enrico and Norbert, the
>>> safest and
>>> > >>> most
>>> > >>> >> >> stable way
>>> > >>> >> >>         > >> is
>>> > >>> >> >>         > >>>>>> upgrade
>>> > >>> >> >>         > >>>>>>> first to 3.4.latest, then go to 3.5.latest.
>>> > >>> Still, if
>>> > >>> >> >> you don't
>>> > >>> >> >>         > >> see
>>> > >>> >> >>         > >>>>> that
>>> > >>> >> >>         > >>>>>>> you would hit this specific issue (e.g. no
>>> > >>> "Invalid
>>> > >>> >> >> server id" in
>>> > >>> >> >>         > >>> the
>>> > >>> >> >>         > >>>>> log
>>> > >>> >> >>         > >>>>>>> files), and all the three servers can
>>> handle
>>> > >>> traffic,
>>> > >>> >> >> then maybe
>>> > >>> >> >>         > >>> you
>>> > >>> >> >>         > >>>>>> don't
>>> > >>> >> >>         > >>>>>>> need to upgrade first to 3.4.latest, it is
>>> your
>>> > >>> >> >> decision.
>>> > >>> >> >>         > >>> Definitely
>>> > >>> >> >>         > >>>>> you
>>> > >>> >> >>         > >>>>>>> should test it first, as suggested by the
>>> > others.
>>> > >>> >> >>         > >>>>>>>
>>> > >>> >> >>         > >>>>>>> Kind regards,
>>> > >>> >> >>         > >>>>>>> Mate
>>> > >>> >> >>         > >>>>>>>
>>> > >>> >> >>         > >>>>>>> On Tue, Mar 24, 2020 at 12:29 PM Norbert
>>> Kalmar
>>> > >>> >> >>         > >>>>>>> <nkalmar@cloudera.com.invalid> wrote:
>>> > >>> >> >>         > >>>>>>>
>>> > >>> >> >>         > >>>>>>>> Hi,
>>> > >>> >> >>         > >>>>>>>>
>>> > >>> >> >>         > >>>>>>>> That guide is to upgrade to 3.5.0, which
>>> was
>>> > an
>>> > >>> >> alpha
>>> > >>> >> >> version.
>>> > >>> >> >>         > >> A
>>> > >>> >> >>         > >>>> lot
>>> > >>> >> >>         > >>>>>> has
>>> > >>> >> >>         > >>>>>>>> changed for the first stable release of
>>> 3.5.5
>>> > >>> and
>>> > >>> >> then
>>> > >>> >> >> a few
>>> > >>> >> >>         > >>> more,
>>> > >>> >> >>         > >>>>> even
>>> > >>> >> >>         > >>>>>>>> rolling upgrade issues have been fixed for
>>> > >>> 3.5.6.
>>> > >>> >> >>         > >>>>>>>> This is a more up-to-date guide:
>>> > >>> >> >>         > >>>>>>>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>
>>> > https://cwiki.apache.org/confluence/display/ZOOKEEPER/Upgrade+FAQ
>>> > >>> >> >>         > >>>>>>>>
>>> > >>> >> >>         > >>>>>>>> If you have done your testing (with prod
>>> > >>> snapshot!),
>>> > >>> >> >> then you
>>> > >>> >> >>         > >> can
>>> > >>> >> >>         > >>>>> skip
>>> > >>> >> >>         > >>>>>>> 3.4
>>> > >>> >> >>         > >>>>>>>> latest upgrade, but keep in mind we do our
>>> > >>> >> >> recommendations for
>>> > >>> >> >>         > >> a
>>> > >>> >> >>         > >>>>>> reason.
>>> > >>> >> >>         > >>>>>>>> There were issues reported and/or found
>>> during
>>> > >>> >> >> testing. Some
>>> > >>> >> >>         > >> are
>>> > >>> >> >>         > >>>>> fixed
>>> > >>> >> >>         > >>>>>>> with
>>> > >>> >> >>         > >>>>>>>> 3.5.6, some only happens if certain
>>> conditions
>>> > >>> stand
>>> > >>> >> >>         > >>> (IOException:
>>> > >>> >> >>         > >>>> No
>>> > >>> >> >>         > >>>>>>>> snapshot found - mentioned in the guide,
>>> fixed
>>> > >>> in
>>> > >>> >> >> 3.5.6).
>>> > >>> >> >>         > >>>>>>>>
>>> > >>> >> >>         > >>>>>>>> So it is up to you, I would still
>>> recommend to
>>> > >>> do an
>>> > >>> >> >> 3.4
>>> > >>> >> >>         > >> upgrade
>>> > >>> >> >>         > >>>>> first,
>>> > >>> >> >>         > >>>>>>> if
>>> > >>> >> >>         > >>>>>>>> it's feasible.
>>> > >>> >> >>         > >>>>>>>>
>>> > >>> >> >>         > >>>>>>>> Regards,
>>> > >>> >> >>         > >>>>>>>> Norbert
>>> > >>> >> >>         > >>>>>>>>
>>> > >>> >> >>         > >>>>>>>> On Tue, Mar 24, 2020 at 11:45 AM kuldeep
>>> > singh <
>>> > >>> >> >>         > >>>>>>> kuldeep.singh08@gmail.com>
>>> > >>> >> >>         > >>>>>>>> wrote:
>>> > >>> >> >>         > >>>>>>>>
>>> > >>> >> >>         > >>>>>>>>> Hi,
>>> > >>> >> >>         > >>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>> Current Zookeeper version :- 3.4.5
>>> > >>> >> >>         > >>>>>>>>> Upgraded version                :- 3.5.6
>>> > >>> >> >>         > >>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>> We are not going with 3.5.7. Our final
>>> > >>> decision is
>>> > >>> >> >> zookeeper
>>> > >>> >> >>         > >>>>> version
>>> > >>> >> >>         > >>>>>> is
>>> > >>> >> >>         > >>>>>>>>> 3.5.6
>>> > >>> >> >>         > >>>>>>>>> as per your reply first we need to move
>>> > latest
>>> > >>> >> >> version of
>>> > >>> >> >>         > >>> 3.4.x,
>>> > >>> >> >>         > >>>>> like
>>> > >>> >> >>         > >>>>>>>> below
>>> > >>> >> >>         > >>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>> 3.4.5 -> 3.4.14 -> 3.5.6 (Correct me if
>>> I am
>>> > >>> wrong
>>> > >>> >> >> here)
>>> > >>> >> >>         > >>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>> But if We are not facing any problem
>>> that i
>>> > >>> have
>>> > >>> >> >> shared you
>>> > >>> >> >>         > >>> that
>>> > >>> >> >>         > >>>> we
>>> > >>> >> >>         > >>>>>>> have
>>> > >>> >> >>         > >>>>>>>>> set up of 3 node cluster where 2 node
>>> are on
>>> > >>> 3.5.6
>>> > >>> >> >> version
>>> > >>> >> >>         > >> and
>>> > >>> >> >>         > >>> 1
>>> > >>> >> >>         > >>>>> node
>>> > >>> >> >>         > >>>>>>> on
>>> > >>> >> >>         > >>>>>>>>> 3.4.5, Everything is running fine and
>>> didn't
>>> > >>> get
>>> > >>> >> any
>>> > >>> >> >> issue,
>>> > >>> >> >>         > >> So
>>> > >>> >> >>         > >>>> what
>>> > >>> >> >>         > >>>>>>> other
>>> > >>> >> >>         > >>>>>>>>> problem we can face if we directly move
>>> to
>>> > >>> 3.5.6
>>> > >>> >> >>         > >>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>> Thanks,
>>> > >>> >> >>         > >>>>>>>>> ---------------------
>>> > >>> >> >>         > >>>>>>>>> Kuldeep Singh Budania
>>> > >>> >> >>         > >>>>>>>>> Software Architect
>>> > >>> >> >>         > >>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>> On Tue, Mar 24, 2020 at 3:58 PM Enrico
>>> > >>> Olivelli <
>>> > >>> >> >>         > >>>>> eolivelli@gmail.com
>>> > >>> >> >>         > >>>>>>>
>>> > >>> >> >>         > >>>>>>>>> wrote:
>>> > >>> >> >>         > >>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>> Hi
>>> > >>> >> >>         > >>>>>>>>>> You have to upgrade to latest 3.4.x
>>> > Zookeeper
>>> > >>> then
>>> > >>> >> >> you will
>>> > >>> >> >>         > >>>>> upgrade
>>> > >>> >> >>         > >>>>>>> to
>>> > >>> >> >>         > >>>>>>>>>> 3.5.7.
>>> > >>> >> >>         > >>>>>>>>>> All should run well without issues
>>> > >>> >> >>         > >>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>> Enrico
>>> > >>> >> >>         > >>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>> Il Mar 24 Mar 2020, 10:18 kuldeep singh
>>> <
>>> > >>> >> >>         > >>>>> kuldeep.singh08@gmail.com
>>> > >>> >> >>         > >>>>>>>
>>> > >>> >> >>         > >>>>>>> ha
>>> > >>> >> >>         > >>>>>>>>>> scritto:
>>> > >>> >> >>         > >>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>>> Hi Team,
>>> > >>> >> >>         > >>>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>>> We are upgrading zookeeper from 3.4.5
>>> to
>>> > >>> 3.5.6. I
>>> > >>> >> >> have
>>> > >>> >> >>         > >> set
>>> > >>> >> >>         > >>>> up 3
>>> > >>> >> >>         > >>>>>>> node
>>> > >>> >> >>         > >>>>>>>>>>> cluster where 2 node are on 3.5.6
>>> version
>>> > >>> and 1
>>> > >>> >> >> node on
>>> > >>> >> >>         > >>>> 3.4.5.
>>> > >>> >> >>         > >>>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>>> Everything is running fine and didn't
>>> get
>>> > any
>>> > >>> >> issue
>>> > >>> >> >> on my
>>> > >>> >> >>         > >>>>> system.
>>> > >>> >> >>         > >>>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>>> but I found something on apache site
>>> that
>>> > >>> first
>>> > >>> >> we
>>> > >>> >> >> need
>>> > >>> >> >>         > >> to
>>> > >>> >> >>         > >>>>>> upgrade
>>> > >>> >> >>         > >>>>>>>> on
>>> > >>> >> >>         > >>>>>>>>>>> 3.4.6 than we can upgrade to 3.5.6. So
>>> is
>>> > it
>>> > >>> >> >> mandatory
>>> > >>> >> >>         > >> to
>>> > >>> >> >>         > >>> go
>>> > >>> >> >>         > >>>>> on
>>> > >>> >> >>         > >>>>>>>> 3.4.6
>>> > >>> >> >>         > >>>>>>>>>>> first.
>>> > >>> >> >>         > >>>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>>> *Upgrading to 3.5.0*
>>> > >>> >> >>         > >>>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>>> Upgrading a running ZooKeeper ensemble
>>> to
>>> > >>> 3.5.0
>>> > >>> >> >> should be
>>> > >>> >> >>         > >>>> done
>>> > >>> >> >>         > >>>>>> only
>>> > >>> >> >>         > >>>>>>>>> after
>>> > >>> >> >>         > >>>>>>>>>>> upgrading your ensemble to the 3.4.6
>>> > release.
>>> > >>> >> Note
>>> > >>> >> >> that
>>> > >>> >> >>         > >>> this
>>> > >>> >> >>         > >>>> is
>>> > >>> >> >>         > >>>>>>> only
>>> > >>> >> >>         > >>>>>>>>>>> necessary for rolling upgrades (if
>>> you're
>>> > >>> fine
>>> > >>> >> with
>>> > >>> >> >>         > >>> shutting
>>> > >>> >> >>         > >>>>> down
>>> > >>> >> >>         > >>>>>>> the
>>> > >>> >> >>         > >>>>>>>>>>> system completely, you don't have to go
>>> > >>> through
>>> > >>> >> >> 3.4.6).
>>> > >>> >> >>         > >> If
>>> > >>> >> >>         > >>>> you
>>> > >>> >> >>         > >>>>>>>> attempt
>>> > >>> >> >>         > >>>>>>>>> a
>>> > >>> >> >>         > >>>>>>>>>>> rolling upgrade without going through
>>> 3.4.6
>>> > >>> (for
>>> > >>> >> >> example
>>> > >>> >> >>         > >>> from
>>> > >>> >> >>         > >>>>>>> 3.4.5),
>>> > >>> >> >>         > >>>>>>>>> you
>>> > >>> >> >>         > >>>>>>>>>>> may get the following error:
>>> > >>> >> >>         > >>>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>>> 2013-01-30 11:32:10,663 [myid:2] - INFO
>>> > >>> >> [localhost/
>>> > >>> >> >>         > >>>>>> 127.0.0.1:2784
>>> > >>> >> >>         > >>>>>>>>>>> :QuorumCnxManager$Listener@498] -
>>> Received
>>> > >>> >> >> connection
>>> > >>> >> >>         > >>>> request
>>> > >>> >> >>         > >>>>> /
>>> > >>> >> >>         > >>>>>>>>>>> 127.0.0.1:60876
>>> > >>> >> >>         > >>>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>>> 2013-01-30 11:32:10,663 [myid:2] - WARN
>>> > >>> >> [localhost/
>>> > >>> >> >>         > >>>>>> 127.0.0.1:2784
>>> > >>> >> >>         > >>>>>>>>>>> :QuorumCnxManager@349] - Invalid
>>> server
>>> > id:
>>> > >>> >> -65536
>>> > >>> >> >>         > >>>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>>> During a rolling upgrade, each server
>>> is
>>> > >>> taken
>>> > >>> >> down
>>> > >>> >> >> in
>>> > >>> >> >>         > >> turn
>>> > >>> >> >>         > >>>> and
>>> > >>> >> >>         > >>>>>>>>> rebooted
>>> > >>> >> >>         > >>>>>>>>>>> with the new 3.5.0 binaries. Before
>>> > starting
>>> > >>> the
>>> > >>> >> >> server
>>> > >>> >> >>         > >>> with
>>> > >>> >> >>         > >>>>>> 3.5.0
>>> > >>> >> >>         > >>>>>>>>>>> binaries, we highly recommend updating
>>> the
>>> > >>> >> >> configuration
>>> > >>> >> >>         > >>> file
>>> > >>> >> >>         > >>>>> so
>>> > >>> >> >>         > >>>>>>> that
>>> > >>> >> >>         > >>>>>>>>> all
>>> > >>> >> >>         > >>>>>>>>>>> server statements "server.x=..."
>>> contain
>>> > >>> client
>>> > >>> >> >> ports
>>> > >>> >> >>         > >> (see
>>> > >>> >> >>         > >>>> the
>>> > >>> >> >>         > >>>>>>>> section
>>> > >>> >> >>         > >>>>>>>>>>> Specifying
>>> > >>> >> >>         > >>>>>>>>>>> the client port). As explained earlier
>>> you
>>> > >>> may
>>> > >>> >> >> leave the
>>> > >>> >> >>         > >>>>>>>> configuration
>>> > >>> >> >>         > >>>>>>>>>> in a
>>> > >>> >> >>         > >>>>>>>>>>> single file, as well as leave the
>>> > >>> >> >>         > >>>> clientPort/clientPortAddress
>>> > >>> >> >>         > >>>>>>>>> statements
>>> > >>> >> >>         > >>>>>>>>>>> (although if you specify client ports
>>> in
>>> > the
>>> > >>> new
>>> > >>> >> >> format,
>>> > >>> >> >>         > >>>> these
>>> > >>> >> >>         > >>>>>>>>> statements
>>> > >>> >> >>         > >>>>>>>>>>> are now redundant).
>>> > >>> >> >>         > >>>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>>> Could you please let me know about this
>>> > case.
>>> > >>> >> >> Appreciate
>>> > >>> >> >>         > >> if
>>> > >>> >> >>         > >>>>>> respond
>>> > >>> >> >>         > >>>>>>>>> soon.
>>> > >>> >> >>         > >>>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>>> Thanks,
>>> > >>> >> >>         > >>>>>>>>>>> ---------------------
>>> > >>> >> >>         > >>>>>>>>>>> Kuldeep Singh Budania
>>> > >>> >> >>         > >>>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>>
>>> > >>> >> >>         > >>>>>>>>
>>> > >>> >> >>         > >>>>>>>
>>> > >>> >> >>         > >>>>>>
>>> > >>> >> >>         > >>>>>
>>> > >>> >> >>         > >>>>
>>> > >>> >> >>         > >>>
>>> > >>> >> >>         > >>
>>> > >>> >> >>         >
>>> > >>> >> >>         >
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >>     ________________________________
>>> > >>> >> >>
>>> > >>> >> >>     CONFIDENTIALITY & PRIVACY NOTICE
>>> > >>> >> >>     This e-mail (including any attachments) is strictly
>>> > >>> confidential
>>> > >>> >> and
>>> > >>> >> >> may also contain privileged information. If you are not the
>>> > >>> intended
>>> > >>> >> >> recipient you are not authorised to read, print, save,
>>> process or
>>> > >>> >> disclose
>>> > >>> >> >> this message. If you have received this message by mistake,
>>> > please
>>> > >>> >> inform
>>> > >>> >> >> the sender immediately and destroy this e-mail, its
>>> attachments
>>> > >>> and any
>>> > >>> >> >> copies. Any use, distribution, reproduction or disclosure by
>>> any
>>> > >>> person
>>> > >>> >> >> other than the intended recipient is strictly prohibited and
>>> the
>>> > >>> person
>>> > >>> >> >> responsible may incur in penalties.
>>> > >>> >> >>     The use of this e-mail is only for professional purposes;
>>> > >>> there is
>>> > >>> >> no
>>> > >>> >> >> guarantee that the correspondence towards this e-mail will be
>>> > read
>>> > >>> >> only by
>>> > >>> >> >> the recipient, because, under certain circumstances, there
>>> may
>>> > be a
>>> > >>> >> need to
>>> > >>> >> >> access this email by third subjects belonging to the Company.
>>> > >>> >> >>
>>> > >>> >> >>
>>> > >>> >> >> ________________________________
>>> > >>> >> >>
>>> > >>> >> >> CONFIDENTIALITY & PRIVACY NOTICE
>>> > >>> >> >> This e-mail (including any attachments) is strictly
>>> confidential
>>> > >>> and
>>> > >>> >> may
>>> > >>> >> >> also contain privileged information. If you are not the
>>> intended
>>> > >>> >> recipient
>>> > >>> >> >> you are not authorised to read, print, save, process or
>>> disclose
>>> > >>> this
>>> > >>> >> >> message. If you have received this message by mistake, please
>>> > >>> inform
>>> > >>> >> the
>>> > >>> >> >> sender immediately and destroy this e-mail, its attachments
>>> and
>>> > any
>>> > >>> >> copies.
>>> > >>> >> >> Any use, distribution, reproduction or disclosure by any
>>> person
>>> > >>> other
>>> > >>> >> than
>>> > >>> >> >> the intended recipient is strictly prohibited and the person
>>> > >>> >> responsible
>>> > >>> >> >> may incur in penalties.
>>> > >>> >> >> The use of this e-mail is only for professional purposes;
>>> there
>>> > is
>>> > >>> no
>>> > >>> >> >> guarantee that the correspondence towards this e-mail will be
>>> > read
>>> > >>> >> only by
>>> > >>> >> >> the recipient, because, under certain circumstances, there
>>> may
>>> > be a
>>> > >>> >> need to
>>> > >>> >> >> access this email by third subjects belonging to the Company.
>>> > >>> >> >>
>>> > >>> >> >
>>> > >>> >>
>>> > >>> >
>>> > >>>
>>> > >>
>>> >
>>>
>>

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