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
Priority: Minor
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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