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From "Vinayakumar B (JIRA)" <j...@apache.org>
Subject [jira] [Deleted] (HDFS-10073) CLONE - Erasure Coding: Badly treated when createBlockOutputStream failed in DataStreamer
Date Tue, 15 Mar 2016 09:42:38 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10073?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vinayakumar B deleted HDFS-10073:
---------------------------------


> CLONE - Erasure Coding:  Badly treated when createBlockOutputStream failed in DataStreamer
> ------------------------------------------------------------------------------------------
>
>                 Key: HDFS-10073
>                 URL: https://issues.apache.org/jira/browse/HDFS-10073
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: dragon
>             Fix For: 3.0.0
>
>
> h4. Issue 1:
> leading streamer calls abandonBlock(..) and get new blockGroup from NN, primary streamer
should sync with non-leading streamer instead of throw exception( offer twice to stripedBlock
blockingQueue).
> {noformat}
> 2015-05-07 18:58:05,335 INFO  hdfs.DataStreamer (DataStreamer.java:nextBlockOutputStream(1386))
- Abandoning BP-172584615-9.96.1.34-1430996280714:blk_-9223372036854775792_1001
> ...
> 2015-05-07 18:58:05,373 WARN  hdfs.DataStreamer (DataStreamer.java:run(572)) - DataStreamer
Exception
> java.io.IOException: Failed: LocatedBlock{BP-172584615-9.96.1.34-1430996280714:blk_-9223372036854775770_1002;
getBlockSize()=0; corrupt=false; offset=1572864; locs=[DatanodeInfoWithStorage[127.0.0.1:52490,DS-6080b76f-adf7-45a8-aa0e-e0e82c2c1569,DISK]]},
i=6
>     at org.apache.hadoop.hdfs.DFSStripedOutputStream$Coordinator.putStripedBlock(DFSStripedOutputStream.java:117)
>     at org.apache.hadoop.hdfs.StripedDataStreamer.locateFollowingBlock(StripedDataStreamer.java:120)
>     at org.apache.hadoop.hdfs.DataStreamer.nextBlockOutputStream(DataStreamer.java:1364)
>     at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:461)
>     at org.apache.hadoop.hdfs.StripedDataStreamer.run(StripedDataStreamer.java:48)
> {noformat}
> h4. Issue 2:
> non-leading streamer calls abandonBlock(..) and get new locatedBlock from coordinator.
Actually it's the last blockGroup, no more locatedBlock can poll from stripedBlocks blockingQueue.
Other 8 streamer finished and closed, but this streamer hangs about 90 seconds.
> {noformat}
> 2015-05-07 19:21:25,357 INFO  BlockStateChange (BlockManager.java:logAddStoredBlock(2768))
- BLOCK* addStoredBlock: blockMap updated: 127.0.0.1:51998 is added to ...
> 2015-05-07 19:22:55,250 WARN  hdfs.DataStreamer (DataStreamer.java:run(572)) - DataStreamer
Exception
> java.io.IOException: Failed: i=1 
>     at org.apache.hadoop.hdfs.DFSStripedOutputStream$Coordinator.getStripedBlock(DFSStripedOutputStream.java:130)
>     at org.apache.hadoop.hdfs.StripedDataStreamer.locateFollowingBlock(StripedDataStreamer.java:124)
>     at org.apache.hadoop.hdfs.DataStreamer.nextBlockOutputStream(DataStreamer.java:1364)
>     at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:461)
>     at org.apache.hadoop.hdfs.StripedDataStreamer.run(StripedDataStreamer.java:48)
> {noformat}
> h4. Issue 3:
> remove abandonBlock(..) RPC call for non-leading streamer



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