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https://issues.apache.org/jira/browse/ZOOKEEPER-2670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15833875#comment-15833875
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Edward Ribeiro commented on ZOOKEEPER-2670:
-------------------------------------------
Hey [~fittey], thanks for taking a stab at this issue. But cloning an issue is
not the way we work here, AFAIK.
First, we are switching to a Github based workflow, so you can clone the ZK
repo from GH, make the changes in your branch and then submit as a PR to ZK at
GH. So, attaching is not even required anymore. More details here:
https://cwiki.apache.org/confluence/display/ZOOKEEPER/HowToContribute
Second, it would be nice if you could sync with the current ZOOKEEPER-2230
assignee so that you can discuss and decide for a solution that covers both
cases. In any case, the committers will have the final word and can decide what
could fits bets to merge.
So, no need yet another JIRA issue to address the same problem. Please, close
this one and discuss your solution (pinging committers if necessary) at
ZOOKEEPER-2230.
Best Regards!
> CLONE - Connections fo ZooKeeper server becomes slow over time with native
> GSSAPI
> ---------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-2670
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2670
> 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: Yan Fitterer
> Assignee: Enis Soztutar
> Labels: patch
> Fix For: 3.4.6, 3.4.7, 3.4.8, 3.5.2
>
>
> 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.
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