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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8220) Erasure Coding: StripedDataStreamer fails to handle the blocklocations which doesn't satisfy BlockGroupSize
Date Tue, 12 May 2015 18:31:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14540412#comment-14540412
] 

Zhe Zhang commented on HDFS-8220:
---------------------------------

bq. It will ignore the bad DN and continue but not switch to a new DN.
HDFS-7672 is already doing this right?

> Erasure Coding: StripedDataStreamer fails to handle the blocklocations which doesn't
satisfy BlockGroupSize
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-8220
>                 URL: https://issues.apache.org/jira/browse/HDFS-8220
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Rakesh R
>            Assignee: Rakesh R
>         Attachments: HDFS-8220-001.patch, HDFS-8220-002.patch, HDFS-8220-003.patch, HDFS-8220-004.patch,
HDFS-8220-HDFS-7285.005.patch, HDFS-8220-HDFS-7285.006.patch, HDFS-8220-HDFS-7285.007.patch,
HDFS-8220-HDFS-7285.007.patch, HDFS-8220-HDFS-7285.008.patch
>
>
> During write operations {{StripedDataStreamer#locateFollowingBlock}} fails to validate
the available datanodes against the {{BlockGroupSize}}. Please see the exception to understand
more:
> {code}
> 2015-04-22 14:56:11,313 WARN  hdfs.DFSClient (DataStreamer.java:run(538)) - DataStreamer
Exception
> java.lang.NullPointerException
> 	at java.util.concurrent.LinkedBlockingQueue.offer(LinkedBlockingQueue.java:374)
> 	at org.apache.hadoop.hdfs.StripedDataStreamer.locateFollowingBlock(StripedDataStreamer.java:157)
> 	at org.apache.hadoop.hdfs.DataStreamer.nextBlockOutputStream(DataStreamer.java:1332)
> 	at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:424)
> 	at org.apache.hadoop.hdfs.StripedDataStreamer.run(StripedDataStreamer.java:1)
> 2015-04-22 14:56:11,313 INFO  hdfs.MiniDFSCluster (MiniDFSCluster.java:shutdown(1718))
- Shutting down the Mini HDFS Cluster
> 2015-04-22 14:56:11,313 ERROR hdfs.DFSClient (DFSClient.java:closeAllFilesBeingWritten(608))
- Failed to close inode 16387
> java.io.IOException: DataStreamer Exception: 
> 	at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:544)
> 	at org.apache.hadoop.hdfs.StripedDataStreamer.run(StripedDataStreamer.java:1)
> Caused by: java.lang.NullPointerException
> 	at java.util.concurrent.LinkedBlockingQueue.offer(LinkedBlockingQueue.java:374)
> 	at org.apache.hadoop.hdfs.StripedDataStreamer.locateFollowingBlock(StripedDataStreamer.java:157)
> 	at org.apache.hadoop.hdfs.DataStreamer.nextBlockOutputStream(DataStreamer.java:1332)
> 	at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:424)
> 	... 1 more
> {code}



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