Kai Sasaki created HDFS-8699:
--------------------------------
Summary: 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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