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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HADOOP-1765) IOException on close: Unknown file
Date Fri, 24 Aug 2007 06:22:30 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-1765?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack resolved HADOOP-1765.
---------------------------

       Resolution: Won't Fix
    Fix Version/s: 0.15.0

Thanks for the observation Raghu.  I addressed the fact that another thread could remove the
parent directory.  This gets me over the fact that close sometimes failed (It took some time
verifying this).  I'll resolve this issue since the real action is happening over in HADOOP-1708
(and you've added a pointer here from HADOOP-1708 as an illustration of issues w/ currently
applied patch).

> IOException on close: Unknown file
> ----------------------------------
>
>                 Key: HADOOP-1765
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1765
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>            Reporter: stack
>             Fix For: 0.15.0
>
>         Attachments: namenode-excerpt.log.gz
>
>
> On occasion I get an IOE trying to close a MapFile I've just opened and filled.  Below
is the content of the namenode log.  The first thing in it after startup messages is the IOE
followed by other messages about '...current leaseholder is trying to recreate file'.  It
repeats for ever.  This is TRUNK r567876.
> I filed this issue at Raghu's suggestion.  Here's what he said on the list:
> .bq Yes, the earler message was also from Namenode log. Before that line there should
have been a message that adds a block to this file in the same log. I think you should file
a Jira for this. It probably related to HADOOP-999. Raghu. 
> {code}
> 2007-08-22 21:38:49,071 INFO org.apache.hadoop.net.NetworkTopology: Adding a new node:
/default-rack/208.76.44.139:50010
> 2007-08-22 21:43:50,216 INFO org.apache.hadoop.fs.FSNamesystem: Roll Edit Log from 208.76.44.139
> 2007-08-22 21:45:21,459 INFO org.apache.hadoop.ipc.Server: IPC Server handler 1 on 9000,
call complete(/bfd/hadoop-stack-data/tmp/hbase/compaction.tmp/hregion_hbaserepository,,8918388410463499185/repo/mapfiles/-1/data,
DFSClient_1857293290) from 208.76.44.139:52301: error: java.io.IOException: Unknown file:
/bfd/hadoop-stack-data/tmp/hbase/compaction.tmp/hregion_hbaserepository,,8918388410463499185/repo/mapfiles/-1/data
> java.io.IOException: Unknown file: /bfd/hadoop-stack-data/tmp/hbase/compaction.tmp/hregion_hbaserepository,,8918388410463499185/repo/mapfiles/-1/data
>     at org.apache.hadoop.dfs.FSDirectory.addBlocks(FSDirectory.java:561)
>     at org.apache.hadoop.dfs.FSNamesystem.completeFileInternal(FSNamesystem.java:1002)
>     at org.apache.hadoop.dfs.FSNamesystem.completeFile(FSNamesystem.java:952)
>     at org.apache.hadoop.dfs.NameNode.complete(NameNode.java:348)
>     at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:340)
>     at org.apache.hadoop.ipc.Server$Handler.run(Server.java:566)
> 2007-08-22 21:45:24,394 WARN org.apache.hadoop.dfs.StateChange: DIR* NameSystem.startFile:
failed to create file /bfd/hadoop-stack-data/tmp/hbase/compaction.tmp/hregion_hbaserepository,,8918388410463499185/repo/mapfiles/-1/data
for DFSClient_1857293290 on client 208.76.44.139 because current leaseholder is trying to
recreate file.
> 2007-08-22 21:45:24,394 INFO org.apache.hadoop.ipc.Server: IPC Server handler 1 on 9000,
call create(/bfd/hadoop-stack-data/tmp/hbase/compaction.tmp/hregion_hbaserepository,,8918388410463499185/repo/mapfiles/-1/data,
DFSClient_1857293290, true, 3, 67108864) from 208.76.44.139:52312: error: org.apache.hadoop.dfs.AlreadyBeingCreatedException:
failed to create file /bfd/hadoop-stack-data/tmp/hbase/compaction.tmp/hregion_hbaserepository,,8918388410463499185/repo/mapfiles/-1/data
for DFSClient_1857293290 on client 208.76.44.139 because current leaseholder is trying to
recreate file.
> org.apache.hadoop.dfs.AlreadyBeingCreatedException: failed to create file /bfd/hadoop-stack-data/tmp/hbase/compaction.tmp/hregion_hbaserepository,,8918388410463499185/repo/mapfiles/-1/data
for DFSClient_1857293290 on client 208.76.44.139 because current leaseholder is trying to
recreate file.
>     at org.apache.hadoop.dfs.FSNamesystem.startFile(FSNamesystem.java:740)
>     at org.apache.hadoop.dfs.NameNode.create(NameNode.java:307)
>     at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source)
>     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)
>     at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:340)
>     at org.apache.hadoop.ipc.Server$Handler.run(Server.java:566)
> {code}
> Let me try and replicate with DEBUG level enabled.  Also, I think I know how to easily
replicate.   Need to do some tests.

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