Andrew Wang created HDFS-11644:
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Summary: DFSStripedOutputStream should not implement Syncable
Key: HDFS-11644
URL: https://issues.apache.org/jira/browse/HDFS-11644
Project: Hadoop HDFS
Issue Type: Bug
Components: erasure-coding
Affects Versions: 3.0.0-alpha1
Reporter: Andrew Wang
FSDataOutputStream#hsync checks if a stream implements Syncable, and if so,
calls hsync. Otherwise, it just calls flush. This is used, for instance, by
YARN's FileSystemTimelineWriter.
DFSStripedOutputStream extends DFSOutputStream, which implements Syncable.
However, DFSStripedOS throws a runtime exception when the Syncable methods are
called.
We should refactor the inheritance structure so DFSStripedOS does not implement
Syncable.
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