Jason Lowe created YARN-1185:
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Summary: FileSystemRMStateStore doesn't use temporary files when
writing data
Key: YARN-1185
URL: https://issues.apache.org/jira/browse/YARN-1185
Project: Hadoop YARN
Issue Type: Bug
Components: resourcemanager
Affects Versions: 2.1.0-beta
Reporter: Jason Lowe
FileSystemRMStateStore writes directly to the destination file when storing
state. However if the RM were to crash in the middle of the write, the recovery
method could encounter a partially-written file and either outright crash
during recovery or silently load incomplete state.
To avoid this, the data should be written to a temporary file and renamed to
the destination file afterwards.
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