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Posted to hdfs-dev@hadoop.apache.org by "Kai Sasaki (JIRA)" <ji...@apache.org> on 2015/06/30 11:34:05 UTC
[jira] [Resolved] (HDFS-8699) DFSClient hang up when there are not
sufficient DataNodes in EC cluster.
[ https://issues.apache.org/jira/browse/HDFS-8699?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Kai Sasaki resolved HDFS-8699.
------------------------------
Resolution: Duplicate
> DFSClient hang up when there are not sufficient DataNodes in EC cluster.
> ------------------------------------------------------------------------
>
> Key: HDFS-8699
> URL: https://issues.apache.org/jira/browse/HDFS-8699
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: HDFS-7285
> Reporter: Kai Sasaki
> Assignee: Kai Sasaki
>
> 6-3 RS schema requires 9 data nodes at least to work properly. However when there are not sufficient DataNodes in EC cluster, writing file fails because of NullPointerException. And also client is hang up.
> {code}
> java.lang.NullPointerException
> at org.apache.hadoop.hdfs.DataStreamer.nextBlockOutputStream(DataStreamer.java:1463)
> at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:591)
> at org.apache.hadoop.hdfs.StripedDataStreamer.run(StripedDataStreamer.java:49)
> {code}
>
> DFSClient should handle insufficient DN error properly just like replication blocks.
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