Brandon Li created HDFS-5249:
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Summary: Fix dumper thread which may die silently
Key: HDFS-5249
URL: https://issues.apache.org/jira/browse/HDFS-5249
Project: Hadoop HDFS
Issue Type: Sub-task
Components: nfs
Reporter: Brandon Li
Assignee: Brandon Li
Dumper thread can get an NPE when the WriteCtx it's about to work on is just
deleted by write back thread.
A dead dumper thread could cause out-of-memory error when too many pending
writes accumulated for one opened file.
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