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From Amila Wijayarathna <amwijayarat...@gmail.com>
Subject Re: Accumulo not initializing
Date Sat, 14 May 2016 11:34:32 GMT
Hi Adina,

After a restart I used *accumulo-1.6.4/bin/stop-all.sh* and after that I
start accumulo again with *accumulo-1.6.4/bin/start-all.sh * then I can
successfully start accumulo without initializing problem.

But after I changed the Datadir value to a local, I can successfully start
Zookeeper. Then I tried to start accumulo using
*accumulo-1.6.4/bin/start-all.sh
*but I got the following,


amila@amila-X550LD:~$ ~/Installs/accumulo-1.6.4/bin/start-all.sh

Starting monitor on localhost

WARN : Max open files on localhost is 1024, recommend 32768

Starting tablet servers .... done

2016-05-14 16:34:54,379 [server.Accumulo] INFO : Attempting to talk to
zookeeper

Starting tablet server on localhost

WARN : Max open files on localhost is 1024, recommend 32768

Thread "org.apache.accumulo.master.state.SetGoalState" died Failed to
connect to zookeeper (localhost:2181) within 2x zookeeper timeout period
30000

java.lang.RuntimeException: Failed to connect to zookeeper (localhost:2181)
within 2x zookeeper timeout period 30000

at
org.apache.accumulo.fate.zookeeper.ZooSession.connect(ZooSession.java:123)

at
org.apache.accumulo.fate.zookeeper.ZooSession.getSession(ZooSession.java:167)


at
org.apache.accumulo.fate.zookeeper.ZooReader.getSession(ZooReader.java:39)

at
org.apache.accumulo.fate.zookeeper.ZooReaderWriter.getZooKeeper(ZooReaderWriter.java:50)


at
org.apache.accumulo.fate.zookeeper.ZooReader.getChildren(ZooReader.java:128)


at
org.apache.accumulo.server.Accumulo.waitForZookeeperAndHdfs(Accumulo.java:269)


at org.apache.accumulo.master.state.SetGoalState.main(SetGoalState.java:46)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)


at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)


at java.lang.reflect.Method.invoke(Method.java:606)

at org.apache.accumulo.start.Main$1.run(Main.java:141)

at java.lang.Thread.run(Thread.java:745)

Starting master on localhost

WARN : Max open files on localhost is 1024, recommend 32768

Starting garbage collector on localhost

WARN : Max open files on localhost is 1024, recommend 32768

Starting tracer on localhost

WARN : Max open files on localhost is 1024, recommend 32768


Any idea about this is appreciated.

Thank you.

On Fri, May 13, 2016 at 8:28 PM, Adina Crainiceanu <adina@usna.edu> wrote:

> Amila,
>
> As Christopher said, make sure that Zookeeper and Hadoop store the data
> outside the /tmp folder. For Zookeeper, the default configuration specifies
> the /tmp/zookeeper folder, so make sure to change that (go to
> /pathtoZookeeper/conf/zoo.cfg  and look at the dataDir value; it should not
> start with /tmp. If it does, change that to some local, non-tmp folder, for
> example /data/zookeeper).
>
> That is a problem for the Rya Vagrant VM too - Zookeeper stores the data in
> /tmp/zookeeper so a restart creates problems with Accumulo, including
> a "Waiting
> for accumulo to be initialized." message
>
> Adina
>
> On Thu, Apr 21, 2016 at 2:17 PM, Amila Wijayarathna <
> amwijayarathna@gmail.com> wrote:
>
> > Hi Christoper,
> > Thank you for your prompt reply. I successfully re-corrected that warning
> > messages from your guidelines and still working on that initializing
> > problem.Any further ideas about that are thoroughly appreciated.
> >
> > Thank you!
> >
> > On Tue, Apr 19, 2016 at 11:06 PM, Christopher <ctubbsii@apache.org>
> wrote:
> >
> > > The warning about the ZooKeeper version is probably due to a trailing
> > slash
> > > at the end of your environment variable for ZOOKEEPER_HOME.
> > >
> > > The max open files warning is regarding what is being discussed here:
> > >
> > >
> >
> http://askubuntu.com/questions/162229/how-do-i-increase-the-open-files-limit-for-a-non-root-user
> > > (this
> > > is just the first link I found that covered the topic... but there
> might
> > be
> > > better discussions of system security limits and ulimit elsewhere)
> > >
> > > The synconclose warning can be addressed by setting the recommended
> value
> > > to true in your hadoop configuration (hdfs-site.xml)
> > >
> > > As for the initialization problem, it sounds like you're trying to
> > > re-initialize Accumulo in the same location that it was previously
> > > initialized. You only need to do initialization once, but you do need
> to
> > > make sure that wherever Hadoop and ZooKeeper are storing their data in
> > the
> > > local filesystem, that they aren't in a temporary directory or
> something
> > > like that.
> > >
> > > If you actually do wish to re-initialize Accumulo, you can delete the
> > > previous contents of Hadoop's /accumulo directory first (make sure you
> > want
> > > to do this... existing data will be deleted), using something like
> > `hadoop
> > > fs -rmr /accumulo` (exact command may depend on your version of
> Hadoop).
> > >
> > > On Tue, Apr 19, 2016 at 1:10 PM Amila Wijayarathna <
> > > amwijayarathna@gmail.com>
> > > wrote:
> > >
> > > > Hi all,
> > > >
> > > > I'm trying to work with RYA in my Ubuntu laptop. And it needs Hadoop,
> > > > Zookeeper and Accumulo servers As prerequisites.
> > > >
> > > > After a shutdown, I need to restart hadoop, zookeeper and accumulo.
> > When
> > > I
> > > > do, Hadoop and Zookeeper servers are starting successfully but when I
> > > start
> > > > Accumulo I get the following,
> > > >
> > > > WARN : Using Zookeeper
> > > > /home/amila/Installs/zookeeper-3.4.8/zookeeper-3.4.8. Use version
> 3.3.0
> > > or
> > > > greater to avoid zookeeper deadlock bug.
> > > >
> > > > Starting monitor on localhost
> > > >
> > > > WARN : Max open files on localhost is 1024, recommend 32768
> > > >
> > > > Starting tablet servers .... done
> > > >
> > > > 2016-04-19 17:40:43,303 [fs.VolumeManagerImpl] WARN :
> > > > dfs.datanode.synconclose set to false in hdfs-site.xml: data loss is
> > > > possible on hard system reset or power loss
> > > >
> > > > 2016-04-19 17:40:43,308 [server.Accumulo] INFO : Attempting to talk
> to
> > > > zookeeper
> > > >
> > > > 2016-04-19 17:40:43,522 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:40:44,534 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:40:45,536 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:40:46,538 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:40:47,541 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:40:48,543 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:40:49,545 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:40:50,547 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:40:51,549 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:40:52,550 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > Starting tablet server on localhost
> > > >
> > > > WARN : Max open files on localhost is 1024, recommend 32768
> > > >
> > > > 2016-04-19 17:40:53,551 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:40:54,552 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:40:55,554 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:40:56,555 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:40:57,556 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:40:58,558 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:40:59,559 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > 2016-04-19 17:41:00,561 [server.Accumulo] INFO : Waiting for accumulo
> > to
> > > be
> > > > initialized
> > > >
> > > > Then I tried to initialize Accumulo and I got following,
> > > >
> > > > 2016-04-19 16:56:06,984 [fs.VolumeManagerImpl] WARN :
> > > > dfs.datanode.synconclose set to false in hdfs-site.xml: data loss is
> > > > possible on hard system reset or power loss
> > > >
> > > > 2016-04-19 16:56:06,985 [init.Initialize] INFO : Hadoop Filesystem is
> > > > hdfs://localhost:9000
> > > >
> > > > 2016-04-19 16:56:06,986 [init.Initialize] INFO : Accumulo data dirs
> are
> > > > [hdfs://localhost:9000/accumulo]
> > > >
> > > > 2016-04-19 16:56:06,986 [init.Initialize] INFO : Zookeeper server is
> > > > localhost:2181
> > > >
> > > > 2016-04-19 16:56:06,986 [init.Initialize] INFO : Checking if
> Zookeeper
> > is
> > > > available. If this hangs, then you need to make sure zookeeper is
> > running
> > > >
> > > > 2016-04-19 16:56:07,250 [init.Initialize] FATAL: It appears the
> > > directories
> > > > [hdfs://localhost:9000/accumulo] were previously initialized.
> > > >
> > > > 2016-04-19 16:56:07,250 [init.Initialize] FATAL: Change the property
> > > > instance.volumes to use different filesystems,
> > > >
> > > > 2016-04-19 16:56:07,250 [init.Initialize] FATAL: or change the
> property
> > > > instance.dfs.dir to use a different directory.
> > > >
> > > > 2016-04-19 16:56:07,250 [init.Initialize] FATAL: The current value of
> > > > instance.dfs.uri is ||
> > > >
> > > > 2016-04-19 16:56:07,250 [init.Initialize] FATAL: The current value of
> > > > instance.dfs.dir is |/accumulo|
> > > >
> > > > 2016-04-19 16:56:07,250 [init.Initialize] FATAL: The current value of
> > > > instance.volumes is |hdfs://localhost:9000/accumulo|
> > > >
> > > >
> > > > Can anyone point me how to do this correctly?
> > > >
> > > > Thank you!
> > > >
> > > >
> > > > --
> > > >
> > > > *Amila Wijayarathna*
> > > > Undergraduate,
> > > > Faculty of Information Technology,
> > > > University of Moratuwa,
> > > > Sri Lanka.
> > > >
> > >
> >
> >
> >
> > --
> >
> > *Amila Wijayarathna*
> > Undergraduate,
> > Faculty of Information Technology,
> > University of Moratuwa,
> > Sri Lanka.
> >
>
>
>
> --
> Dr. Adina Crainiceanu
> Associate Professor, Computer Science Department
> United States Naval Academy
> 410-293-6822
> adina@usna.edu
> http://www.usna.edu/Users/cs/adina/
>



-- 

*Amila Wijayarathna*
Undergraduate,
Faculty of Information Technology,
University of Moratuwa,
Sri Lanka.

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