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Posted to hdfs-dev@hadoop.apache.org by "dragon (JIRA)" <ji...@apache.org> on 2016/03/15 09:17:35 UTC
[jira] [Created] (HDFS-10132) CLONE - DFSClient hang up when there
are not sufficient DataNodes in EC cluster.
dragon created HDFS-10132:
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Summary: CLONE - DFSClient hang up when there are not sufficient DataNodes in EC cluster.
Key: HDFS-10132
URL: https://issues.apache.org/jira/browse/HDFS-10132
Project: Hadoop HDFS
Issue Type: Sub-task
Affects Versions: HDFS-7285
Reporter: dragon
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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