Corrupted block replication retries for ever
--------------------------------------------
Key: HADOOP-1955
URL: https://issues.apache.org/jira/browse/HADOOP-1955
Project: Hadoop
Issue Type: Bug
Components: dfs
Affects Versions: 0.14.1
Reporter: Koji Noguchi
Priority: Blocker
When replicating corrupted block, receiving side rejects the block due to
checksum error. Namenode keeps on retrying (with the same source datanode).
Fsck shows those blocks as under-replicated.
[Namenode log]
{noformat}
2007-09-27 02:00:05,273 INFO org.apache.hadoop.dfs.StateChange: BLOCK*
NameSystem.heartbeatCheck: lost heartbeat from 99.2.99.111
...
2007-09-27 02:01:02,618 INFO org.apache.hadoop.dfs.StateChange: BLOCK*
NameSystem.pendingTransfer: ask 99.9.99.11:9999 to replicate
blk_-5925066143536023890 to datanode(s) 99.9.99.37:9999
2007-09-27 02:10:03,843 WARN org.apache.hadoop.fs.FSNamesystem:
PendingReplicationMonitor timed out block blk_-5925066143536023890
2007-09-27 02:10:08,248 INFO org.apache.hadoop.dfs.StateChange: BLOCK*
NameSystem.pendingTransfer: ask 99.9.99.11:9999 to replicate
blk_-5925066143536023890 to datanode(s) 99.9.99.35:9999
2007-09-27 02:20:03,848 WARN org.apache.hadoop.fs.FSNamesystem:
PendingReplicationMonitor timed out block blk_-5925066143536023890
2007-09-27 02:20:08,646 INFO org.apache.hadoop.dfs.StateChange: BLOCK*
NameSystem.pendingTransfer: ask 99.9.99.11:9999 to replicate
blk_-5925066143536023890 to datanode(s) 99.9.99.19:9999
(repeats)
{noformat}
[Datanode(sender) 99.9.99.11 log]
{noformat}
2007-09-27 02:01:04,493 INFO org.apache.hadoop.dfs.DataNode: Starting thread to
transfer block blk_-5925066143536023890 to
[Lorg.apache.hadoop.dfs.DatanodeInfo;@e58187
2007-09-27 02:01:05,153 WARN org.apache.hadoop.dfs.DataNode: Failed to transfer
blk_-5925066143536023890 to 74.6.128.37:50010 got java.net.SocketException:
Connection reset
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:96)
at java.net.SocketOutputStream.write(SocketOutputStream.java:136)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
at java.io.BufferedOutputStream.write(BufferedOutputStream.java:109)
at java.io.DataOutputStream.write(DataOutputStream.java:90)
at org.apache.hadoop.dfs.DataNode.sendBlock(DataNode.java:1231)
at org.apache.hadoop.dfs.DataNode$DataTransfer.run(DataNode.java:1280)
at java.lang.Thread.run(Thread.java:619)
(repeats)
{noformat}
[Datanode(one of the receiver) 99.9.99.37 log]
{noformat}
2007-09-27 02:01:05,150 ERROR org.apache.hadoop.dfs.DataNode: DataXceiver:
java.io.IOException: Unexpected checksum mismatch while writing
blk_-5925066143536023890 from /74.6.128.33:57605
at org.apache.hadoop.dfs.DataNode$DataXceiver.writeBlock(DataNode.java:902)
at org.apache.hadoop.dfs.DataNode$DataXceiver.run(DataNode.java:727)
at java.lang.Thread.run(Thread.java:619)
{noformat}
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