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Date: Tue, 26 Aug 2008 16:30:44 -0700 (PDT)
From: "stack (JIRA)" <jira@apache.org>
To: hbase-dev@hadoop.apache.org
Subject: [jira] Commented: (HBASE-846) hbase looses its mind when hdfs fills
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    [ https://issues.apache.org/jira/browse/HBASE-846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12625907#action_12625907 ] 

stack commented on HBASE-846:
-----------------------------

hbase 0.2.0 and hadoop 0.17.2. on pset cluster.

> hbase looses its mind when hdfs fills
> -------------------------------------
>
>                 Key: HBASE-846
>                 URL: https://issues.apache.org/jira/browse/HBASE-846
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: stack
>
> Looking in log, I see:
> {code}
> 2008-08-26 18:57:23,602 INFO org.apache.hadoop.dfs.DFSClient: org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /hbase/aa0-000-8.u.powerset.com/log_208.76.45.95_1218666613846_60020/hlog.dat.1219776799293 could only be replicated to 0 nodes, instead of 1
>         at org.apache.hadoop.dfs.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1145)
>         at org.apache.hadoop.dfs.NameNode.addBlock(NameNode.java:300)
>         at sun.reflect.GeneratedMethodAccessor17.invoke(Unknown Source)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>         at java.lang.reflect.Method.invoke(Unknown Source)
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:446)
>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:896)
>         at org.apache.hadoop.ipc.Client.call(Client.java:557)
>         at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:212)
>         at org.apache.hadoop.dfs.$Proxy1.addBlock(Unknown Source)
>         at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>         at java.lang.reflect.Method.invoke(Unknown Source)
>         at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
>         at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
>         at org.apache.hadoop.dfs.$Proxy1.addBlock(Unknown Source)
>         at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:2335)
>         at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2220)
>         at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.access$1700(DFSClient.java:1702)
>         at org.apache.hadoop.dfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:1842)
> {code}
> ... and then:
> {code}
> 2008-08-26 18:57:28,423 WARN org.apache.hadoop.dfs.DFSClient: Error Recovery for block null bad datanode[0]
> 2008-08-26 18:57:28,424 FATAL org.apache.hadoop.hbase.regionserver.HLog: Could not append. Requesting close of log
> java.io.IOException: Could not get block locations. Aborting... 
>         at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.processDatanodeError(DFSClient.java:2081)
>         at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.access$1300(DFSClient.java:1702)
>         at org.apache.hadoop.dfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:1818)
> 2008-08-26 18:57:28,424 INFO org.apache.hadoop.hbase.regionserver.LogRoller: Rolling hlog. Number of entries: 127
> 2008-08-26 18:57:28,424 ERROR org.apache.hadoop.hbase.regionserver.LogRoller: Log rolling failed
> java.io.IOException: Could not get block locations. Aborting...
>         at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.processDatanodeError(DFSClient.java:2081)
>         at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.access$1300(DFSClient.java:1702)
>         at org.apache.hadoop.dfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:1818)
> ...
> {code}
> ... and so on.
> Meantime clients are trying to do updates and getting below:
> {code}
> 2008-08-26 22:49:42,834 INFO org.apache.hadoop.ipc.Server: IPC Server handler 9 on 60020, call batchUpdate([B@40e830f1, row => IKwQLMJ3rKRvtAv_ZkQlAk==, {column => page:url, value => '...', column => page:contents, value => '...'}) from 208.76.45.3:51164: error: java.io.IOException: Could not get block locations. Aborting... 
> java.io.IOException: Could not get block locations. Aborting...
>         at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.processDatanodeError(DFSClient.java:2081)
>         at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.access$1300(DFSClient.java:1702)
>         at org.apache.hadoop.dfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:1818)
> ..
> {code}
> DFSClient seems horked.
> Need to be able to ride out these kind of event.  
> Restart is needed.
> Test this by filling HDFS.

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