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https://issues.apache.org/jira/browse/HADOOP-3033?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12580191#action_12580191
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Tsz Wo (Nicholas), SZE commented on HADOOP-3033:
------------------------------------------------
+1 codes look good
Some minor comments:
- It might be better to use ackQueue lock instead of PacketResponder.this for
ackQueue related synchronization.
- Should check LOG.isDebugEnabled() before printing debug messages. Then the
message will not be constructed (i.e. better performance) if debug is not
enabled.
> Datanode fails write to DFS file with exception message "Trying to change
> block file offset"
> --------------------------------------------------------------------------------------------
>
> Key: HADOOP-3033
> URL: https://issues.apache.org/jira/browse/HADOOP-3033
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Affects Versions: 0.16.1
> Reporter: dhruba borthakur
> Assignee: dhruba borthakur
> Attachments: badnode.patch, badnode2.patch
>
>
> A write to a DFS block failed with the lastdatanode in the pipeline reporting
> this error:
> Receiving block blk_-7279084187433655573 src: /xx.xx.xx.xx:xx dest:
> /xx.xx.xx.xx:50010
> Changing block file offset of block blk_-7279084187433655573 from 9043968 to
> 9043968 meta file offset to 70663
> Changing block file offset of block blk_-7279084187433655573 from 111935488
> to 112001024 meta file offset to 875015
> Exception in receiveBlock for block blk_-7279084187433655573
> java.io.IOException: Trying to change block file offset of block
> blk_-7279084187433655573 to 112001024 but actual size of file is 111935488
> PacketResponder 0 for block blk_-7279084187433655573 Interrupted.
> PacketResponder 0 for block blk_-7279084187433655573 terminating
> writeBlock blk_-7279084187433655573 received exception java.io.IOException:
> Trying to change block file offset of block blk_-7279084187433655573 to
> 112001024 but actual size of file is 111935488
> DataXceiver: java.io.IOException: Trying to change block file offset of block
> blk_-7279084187433655573 to 112001024 but actual size of file is 111935488
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