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Posted to issues@hbase.apache.org by "stack (Commented) (JIRA)" <ji...@apache.org> on 2011/11/20 00:43:52 UTC
[jira] [Commented] (HBASE-4830) Regionserver BLOCKED on WAITING
DFSClient$DFSOutputStream.waitForAckedSeqno running 0.20.205.0+
[ https://issues.apache.org/jira/browse/HBASE-4830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13153622#comment-13153622 ]
stack commented on HBASE-4830:
------------------------------
Hmmm... looks like I had an OOME first (Running w/ 1G/Default heap).
> Regionserver BLOCKED on WAITING DFSClient$DFSOutputStream.waitForAckedSeqno running 0.20.205.0+
> -----------------------------------------------------------------------------------------------
>
> Key: HBASE-4830
> URL: https://issues.apache.org/jira/browse/HBASE-4830
> Project: HBase
> Issue Type: Bug
> Reporter: stack
>
> Running 0.20.205.1 (I was not at tip of the branch) I ran into the following hung regionserver:
> {code}
> "regionserver7003.logRoller" daemon prio=10 tid=0x00007fd98028f800 nid=0x61af in Object.wait() [0x00007fd987bfa000]
> java.lang.Thread.State: WAITING (on object monitor)
> at java.lang.Object.wait(Native Method)
> at java.lang.Object.wait(Object.java:485)
> at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.waitForAckedSeqno(DFSClient.java:3606)
> - locked <0x00000000f8656788> (a java.util.LinkedList)
> at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.flushInternal(DFSClient.java:3595)
> at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.closeInternal(DFSClient.java:3687)
> - locked <0x00000000f8656458> (a org.apache.hadoop.hdfs.DFSClient$DFSOutputStream)
> at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.close(DFSClient.java:3626)
> at org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:61)
> at org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:86)
> at org.apache.hadoop.io.SequenceFile$Writer.close(SequenceFile.java:966)
> - locked <0x00000000f8655998> (a org.apache.hadoop.io.SequenceFile$Writer)
> at org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogWriter.close(SequenceFileLogWriter.java:214)
> at org.apache.hadoop.hbase.regionserver.wal.HLog.cleanupCurrentWriter(HLog.java:791)
> at org.apache.hadoop.hbase.regionserver.wal.HLog.rollWriter(HLog.java:578)
> - locked <0x00000000c443deb0> (a java.lang.Object)
> at org.apache.hadoop.hbase.regionserver.LogRoller.run(LogRoller.java:94)
> at java.lang.Thread.run(Thread.java:662)
> {code}
> Other threads are like this (here's a sample):
> {code}
> "regionserver7003.logSyncer" daemon prio=10 tid=0x00007fd98025e000 nid=0x61ae waiting for monitor entry [0x00007fd987cfb000]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at org.apache.hadoop.hbase.regionserver.wal.HLog.syncer(HLog.java:1074)
> - waiting to lock <0x00000000c443deb0> (a java.lang.Object)
> at org.apache.hadoop.hbase.regionserver.wal.HLog.sync(HLog.java:1195)
> at org.apache.hadoop.hbase.regionserver.wal.HLog$LogSyncer.run(HLog.java:1057)
> at java.lang.Thread.run(Thread.java:662)
> ....
> "IPC Server handler 0 on 7003" daemon prio=10 tid=0x00007fd98049b800 nid=0x61b8 waiting for monitor entry [0x00007fd9872f1000]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at org.apache.hadoop.hbase.regionserver.wal.HLog.append(HLog.java:1007)
> - waiting to lock <0x00000000c443deb0> (a java.lang.Object)
> at org.apache.hadoop.hbase.regionserver.HRegion.doMiniBatchPut(HRegion.java:1798)
> at org.apache.hadoop.hbase.regionserver.HRegion.put(HRegion.java:1668)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.multi(HRegionServer.java:2980)
> at sun.reflect.GeneratedMethodAccessor636.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:364)
> at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1325)
> {code}
> Looks like HDFS-1529? (Todd?)
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