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Posted to hdfs-dev@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2014/07/19 00:20:14 UTC
[jira] [Resolved] (HDFS-45) DFS client should throw version
mismatch errors in case of a changed functionality
[ https://issues.apache.org/jira/browse/HDFS-45?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Allen Wittenauer resolved HDFS-45.
----------------------------------
Resolution: Not a Problem
This is no longer necessary with protobuf rpc.
> DFS client should throw version mismatch errors in case of a changed functionality
> ----------------------------------------------------------------------------------
>
> Key: HDFS-45
> URL: https://issues.apache.org/jira/browse/HDFS-45
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Amar Kamat
>
> I started a hadoop cluster, built with the (latest) trunk and tried doing _dfs -put_ with the (dfs) clients from the (older/stale) trunk. The client went ahead and tried to upload the data onto the cluster and failed with the following error
> {noformat}
> -bash-3.00$ ./bin/hadoop dfs -put file file
> 08/08/22 05:11:06 INFO hdfs.DFSClient: Exception in createBlockOutputStream java.io.IOException: Could not read from stream
> 08/08/22 05:11:06 INFO hdfs.DFSClient: Abandoning block blk_5748330682182803489_1002
> 08/08/22 05:11:12 INFO hdfs.DFSClient: Exception in createBlockOutputStream java.io.IOException: Could not read from stream
> 08/08/22 05:11:12 INFO hdfs.DFSClient: Abandoning block blk_7482082538144151768_1002
> 08/08/22 05:11:18 INFO hdfs.DFSClient: Exception in createBlockOutputStream java.io.IOException: Could not read from stream
> 08/08/22 05:11:18 INFO hdfs.DFSClient: Abandoning block blk_-3132217232090937466_1002
> 08/08/22 05:11:24 INFO hdfs.DFSClient: Exception in createBlockOutputStream java.io.IOException: Could not read from stream
> 08/08/22 05:11:24 INFO hdfs.DFSClient: Abandoning block blk_-6473055472384366978_1002
> 08/08/22 05:11:30 WARN hdfs.DFSClient: DataStreamer Exception: java.io.IOException: Unable to create new block.
> at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2504)
> at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2000(DFSClient.java:1810)
> at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:1990)
> put: Filesystem closed
> {noformat}
> It would be better if somehow the client detects that its not *made* for this master and softly/simply bail out.
> ----
> Note that I *did not* do it on purpose but forgot to replace the older installation with the newer one.
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