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https://issues.apache.org/jira/browse/HBASE-1491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nitay Joffe updated HBASE-1491:
-------------------------------
Attachment: hbase-1491.patch
Here is my solution for this. I ran this with TestGetRowVersions and am seeing
none of these messages.
In this patch:
- Close ZooKeeperWrapper in Master, RegionServer, and TableServers when they're
finishing.
- Add method to HConnectionManager to delete all connections.
- On MiniHBaseCluster shutdown, after LocalHBaseCluster has finished shutting
down, delete all connections in HConnectionManager.
Is the last item safe to do? I think it should be. Note that without it we get
some of these zkid messages.
> ZooKeeper errors: "Client has seen zxid 0xe our last zxid is 0xd"
> -----------------------------------------------------------------
>
> Key: HBASE-1491
> URL: https://issues.apache.org/jira/browse/HBASE-1491
> Project: Hadoop HBase
> Issue Type: Bug
> Components: test
> Reporter: Nitay Joffe
> Assignee: Nitay Joffe
> Fix For: 0.20.0
>
> Attachments: hbase-1491.patch
>
>
> We have been seeing a lot of these messages in tests:
> [junit] 2009-06-02 11:57:23,658 ERROR [NIOServerCxn.Factory:21810]
> server.NIOServerCnxn(514): Client has seen zxid 0xe our last zxid is 0xd
> They usually repeat in a seemingly endless loop, such as:
> [junit] 2009-06-02 13:27:54,083 INFO [main-SendThread]
> zookeeper.ClientCnxn$SendThread(737): Priming connection to
> java.nio.channels.SocketChannel[connected local=/0:0:0:0:0:0:0:1%0:56511
> remote=localhost/0:0:0:0:0:0:0:1:21810]
> [junit] 2009-06-02 13:27:54,084 INFO [main-SendThread]
> zookeeper.ClientCnxn$SendThread(889): Server connection successful
> [junit] 2009-06-02 13:27:54,093 INFO [NIOServerCxn.Factory:21810]
> server.NIOServerCnxn(532): Connected to /0:0:0:0:0:0:0:1%0:56511 lastZxid 16
> [junit] 2009-06-02 13:27:54,094 ERROR [NIOServerCxn.Factory:21810]
> server.NIOServerCnxn(543): Client has seen zxid 0x10 our last zxid is 0x4
> [junit] 2009-06-02 13:27:54,094 WARN [NIOServerCxn.Factory:21810]
> server.NIOServerCnxn(444): Exception causing close of session 0x0 due to
> java.io.IOException: Client has seen zxid 0x10 our last zxid is 0x4
> [junit] 2009-06-02 13:27:54,094 DEBUG [NIOServerCxn.Facto777ry:21810]
> server.NIOServerCnxn(447): IOException stack trace
> [junit] java.io.IOException: Client has seen zxid 0x10 our last zxid is
> 0x4
> [junit] at
> org.apache.zookeeper.server.NIOServerCnxn.readConnectRequest(NIOServerCnxn.java:544)
> [junit] at
> org.apache.zookeeper.server.NIOServerCnxn.doIO(NIOServerCnxn.java:331)
> [junit] at
> org.apache.zookeeper.server.NIOServerCnxn$Factory.run(NIOServerCnxn.java:176)
> [junit] 2009-06-02 13:27:54,094 INFO [NIOServerCxn.Factory:21810]
> server.NIOServerCnxn(777): closing session:0x0 NIOServerCnxn:
> java.nio.channels.SocketChannel[connected local=/0:0:0:0:0:0:0:1%0:21810
> remote=/0:0:0:0:0:0:0:1%0:56511]
> [junit] 2009-06-02 13:27:54,097 WARN [main-SendThread]
> zookeeper.ClientCnxn$SendThread(919): Exception closing session
> 0x121a2a7c43a0002 to sun.nio.ch.selectionkeyi...@2c662b4e
> [junit] java.io.IOException: Read error rc = -1
> java.nio.DirectByteBuffer[pos=0 lim=4 cap=4]
> [junit] at
> org.apache.zookeeper.ClientCnxn$SendThread.doIO(ClientCnxn.java:653)
> [junit] at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:897)
> [junit] 2009-06-02 13:27:54,097 WARN [main-SendThread]
> zookeeper.ClientCnxn$SendThread(953): Ignoring exception during shutdown input
> [junit] java.net.SocketException: Socket is not connected
> [junit] at sun.nio.ch.SocketChannelImpl.shutdown(Native Method)
> [junit] at
> sun.nio.ch.SocketChannelImpl.shutdownInput(SocketChannelImpl.java:640)
> [junit] at
> sun.nio.ch.SocketAdaptor.shutdownInput(SocketAdaptor.java:360)
> [junit] at
> org.apache.zookeeper.ClientCnxn$SendThread.cleanup(ClientCnxn.java:951)
> [junit] at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:922)
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