zookeeper-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Rajkiran Sura (Jira)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-2230) Connections fo ZooKeeper server becomes slow over time with native GSSAPI
Date Wed, 25 Sep 2019 17:35:00 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16937930#comment-16937930
] 

Rajkiran Sura commented on ZOOKEEPER-2230:
------------------------------------------

Hi [~fittey], Apologies that Deepesh couldn't test out your patch. I am a colleague of Deepesh
and now working on upgrading ZooKeeper to 3.5.5 branch. As you said, this bug exists in v3.5.5
too. Could you please provide me your patch with v3.5.5 branch and I would be happy to test
it out in our environment. Thanks!

> Connections fo ZooKeeper server becomes slow over time with native GSSAPI
> -------------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-2230
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2230
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.4.6, 3.4.7, 3.4.8, 3.5.0
>         Environment: OS: RHEL6
> Java: 1.8.0_40
> Configuration:
> java.env:
> {noformat}
> SERVER_JVMFLAGS="$SERVER_JVMFLAGS -Xmx5120m"
> SERVER_JVMFLAGS="$SERVER_JVMFLAGS -Djava.security.auth.login.config=/local/apps/zookeeper-test1/conf/jaas-server.conf"
> SERVER_JVMFLAGS="$SERVER_JVMFLAGS -Dsun.security.jgss.native=true"
> {noformat}
> jaas-server.conf:
> {noformat}
> Server {
>     com.sun.security.auth.module.Krb5LoginModule required
>     useKeyTab=true
>     isInitiator=false
>     principal="zookeeper/<hostname>@<REALM>";
> };
> {noformat}
> Process environment:
> {noformat}
> KRB5_KTNAME=/local/apps/zookeeper-test1/conf/keytab
> ZOO_LOG_DIR=/local/apps/zookeeper-test1/log
> ZOOCFGDIR=/local/apps/zookeeper-test1/conf
> {noformat}
>            Reporter: Deepesh Reja
>            Assignee: Enis Soztutar
>            Priority: Major
>              Labels: patch, pull-request-available
>             Fix For: 3.4.6, 3.4.7, 3.4.8, 3.5.2
>
>         Attachments: ZOOKEEPER-2230.patch
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> ZooKeeper server becomes slow over time when native GSSAPI is used. The connection to
the server starts taking upto 10 seconds.
> This is happening with ZooKeeper-3.4.6 and is fairly reproducible.
> Debug logs:
> {noformat}
> 2015-07-02 00:58:49,318 [myid:] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:NIOServerCnxnFactory@197]
- Accepted socket connection from /<client_ip>:47942
> 2015-07-02 00:58:49,318 [myid:] - DEBUG [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:ZooKeeperSaslServer@78]
- serviceHostname is '<zookeeper-server>'
> 2015-07-02 00:58:49,318 [myid:] - DEBUG [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:ZooKeeperSaslServer@79]
- servicePrincipalName is 'zookeeper'
> 2015-07-02 00:58:49,318 [myid:] - DEBUG [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:ZooKeeperSaslServer@80]
- SASL mechanism(mech) is 'GSSAPI'
> 2015-07-02 00:58:49,324 [myid:] - DEBUG [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:ZooKeeperSaslServer@106]
- Added private credential to subject: [GSSCredential: 
> zookeeper@<zookeeper-server> 1.2.840.113554.1.2.2 Accept [class sun.security.jgss.wrapper.GSSCredElement]]
> 2015-07-02 00:58:59,441 [myid:] - DEBUG [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:ZooKeeperServer@810]
- Session establishment request from client /<client_ip>:47942 client's lastZxid is
0x0
> 2015-07-02 00:58:59,441 [myid:] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:ZooKeeperServer@868]
- Client attempting to establish new session at /<client_ip>:47942
> 2015-07-02 00:58:59,448 [myid:] - DEBUG [SyncThread:0:FinalRequestProcessor@88] - Processing
request:: sessionid:0x14e486028785c81 type:createSession cxid:0x0 zxid:0x110e79 txntype:-10
reqpath:n/a
> 2015-07-02 00:58:59,448 [myid:] - DEBUG [SyncThread:0:FinalRequestProcessor@160] - sessionid:0x14e486028785c81
type:createSession cxid:0x0 zxid:0x110e79 txntype:-10 reqpath:n/a
> 2015-07-02 00:58:59,448 [myid:] - INFO  [SyncThread:0:ZooKeeperServer@617] - Established
session 0x14e486028785c81 with negotiated timeout 10000 for client /<client_ip>:47942
> 2015-07-02 00:58:59,452 [myid:] - DEBUG [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:ZooKeeperServer@949]
- Responding to client SASL token.
> 2015-07-02 00:58:59,452 [myid:] - DEBUG [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:ZooKeeperServer@953]
- Size of client SASL token: 706
> 2015-07-02 00:58:59,460 [myid:] - DEBUG [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:ZooKeeperServer@984]
- Size of server SASL response: 161
> 2015-07-02 00:58:59,462 [myid:] - DEBUG [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:ZooKeeperServer@949]
- Responding to client SASL token.
> 2015-07-02 00:58:59,462 [myid:] - DEBUG [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:ZooKeeperServer@953]
- Size of client SASL token: 0
> 2015-07-02 00:58:59,462 [myid:] - DEBUG [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:ZooKeeperServer@984]
- Size of server SASL response: 32
> 2015-07-02 00:58:59,463 [myid:] - DEBUG [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:ZooKeeperServer@949]
- Responding to client SASL token.
> 2015-07-02 00:58:59,463 [myid:] - DEBUG [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:ZooKeeperServer@953]
- Size of client SASL token: 32
> 2015-07-02 00:58:59,464 [myid:] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:SaslServerCallbackHandler@118]
- Successfully authenticated client: authenticationID=<user_principal>;  authorizationID=<user_principal>.
> 2015-07-02 00:58:59,464 [myid:] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:ZooKeeperServer@964]
- adding SASL authorization for authorizationID: <user_principal>
> 2015-07-02 00:58:59,465 [myid:] - INFO  [ProcessThread(sid:0 cport:-1)::PrepRequestProcessor@494]
- Processed session termination for sessionid: 0x14e486028785c81
> 2015-07-02 00:58:59,467 [myid:] - DEBUG [SyncThread:0:FinalRequestProcessor@88] - Processing
request:: sessionid:0x14e486028785c81 type:closeSession cxid:0x1 zxid:0x110e7a txntype:-11
reqpath:n/a
> 2015-07-02 00:58:59,467 [myid:] - DEBUG [SyncThread:0:FinalRequestProcessor@160] - sessionid:0x14e486028785c81
type:closeSession cxid:0x1 zxid:0x110e7a txntype:-11 reqpath:n/a
> 2015-07-02 00:58:59,467 [myid:] - INFO  [NIOServerCxn.Factory:0.0.0.0/0.0.0.0:42405:NIOServerCnxn@1007]
- Closed socket connection for client /<client_ip>:47942 which had sessionid 0x14e486028785c81
> {noformat}
> If you see, after adding the credentials to privateCredential set, it takes roughly 10
seconds to reach to session establishment request. From the code it looks like Subject.doAs()
is taking a lot of time.
> I connected it to jdb while it was waiting and got following stacktrace:
> {noformat}
> NIOServerCxn.Factory:0.0.0.0/0.0.0.0:58909:
>   [1] java.util.HashMap$TreeNode.find (HashMap.java:1,865)
>   [2] java.util.HashMap$TreeNode.find (HashMap.java:1,861)
>   [3] java.util.HashMap$TreeNode.find (HashMap.java:1,861)
>   [4] java.util.HashMap$TreeNode.find (HashMap.java:1,861)
>   [5] java.util.HashMap$TreeNode.find (HashMap.java:1,861)
>   [6] java.util.HashMap$TreeNode.find (HashMap.java:1,861)
>   [7] java.util.HashMap$TreeNode.find (HashMap.java:1,861)
>   [8] java.util.HashMap$TreeNode.putTreeVal (HashMap.java:1,981)
>   [9] java.util.HashMap.putVal (HashMap.java:637)
>   [10] java.util.HashMap.put (HashMap.java:611)
>   [11] java.util.HashSet.add (HashSet.java:219)
>   [12] javax.security.auth.Subject$ClassSet.populateSet (Subject.java:1,418)
>   [13] javax.security.auth.Subject$ClassSet.<init> (Subject.java:1,372)
>   [14] javax.security.auth.Subject.getPrivateCredentials (Subject.java:767)
>   [15] sun.security.jgss.GSSUtil$1.run (GSSUtil.java:340)
>   [16] sun.security.jgss.GSSUtil$1.run (GSSUtil.java:332)
>   [17] java.security.AccessController.doPrivileged (native method)
>   [18] sun.security.jgss.GSSUtil.searchSubject (GSSUtil.java:332)
>   [19] sun.security.jgss.wrapper.NativeGSSFactory.getCredFromSubject (NativeGSSFactory.java:53)
>   [20] sun.security.jgss.wrapper.NativeGSSFactory.getCredentialElement (NativeGSSFactory.java:116)
>   [21] sun.security.jgss.GSSManagerImpl.getCredentialElement (GSSManagerImpl.java:193)
>   [22] sun.security.jgss.GSSCredentialImpl.add (GSSCredentialImpl.java:427)
>   [23] sun.security.jgss.GSSCredentialImpl.<init> (GSSCredentialImpl.java:62)
>   [24] sun.security.jgss.GSSManagerImpl.createCredential (GSSManagerImpl.java:154)
>   [25] com.sun.security.sasl.gsskerb.GssKrb5Server.<init> (GssKrb5Server.java:108)
>   [26] com.sun.security.sasl.gsskerb.FactoryImpl.createSaslServer (FactoryImpl.java:85)
>   [27] javax.security.sasl.Sasl.createSaslServer (Sasl.java:524)
>   [28] org.apache.zookeeper.server.ZooKeeperSaslServer$1.run (ZooKeeperSaslServer.java:118)
>   [29] org.apache.zookeeper.server.ZooKeeperSaslServer$1.run (ZooKeeperSaslServer.java:114)
>   [30] java.security.AccessController.doPrivileged (native method)
>   [31] javax.security.auth.Subject.doAs (Subject.java:422)
>   [32] org.apache.zookeeper.server.ZooKeeperSaslServer.createSaslServer (ZooKeeperSaslServer.java:114)
>   [33] org.apache.zookeeper.server.ZooKeeperSaslServer.<init> (ZooKeeperSaslServer.java:48)
>   [34] org.apache.zookeeper.server.NIOServerCnxn.<init> (NIOServerCnxn.java:100)
>   [35] org.apache.zookeeper.server.NIOServerCnxnFactory.createConnection (NIOServerCnxnFactory.java:161)
>   [36] org.apache.zookeeper.server.NIOServerCnxnFactory.run (NIOServerCnxnFactory.java:202)
>   [37] java.lang.Thread.run (Thread.java:745)
> {noformat}
> This doesn't happen when we use JGSS, I think because adding credential to privateCredential
set for every connection is causing Subject.doAS() to take much longer time.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)

Mime
View raw message