Zhe Zhang created HDFS-7211:
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Summary: Block invalidation work should be ordered
Key: HDFS-7211
URL: https://issues.apache.org/jira/browse/HDFS-7211
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Zhe Zhang
Assignee: Zhe Zhang
{{InvalidateBlocks#node2blocks}} uses an unordered {{LightWeightHashSet}} to
store blocks (to be invalidated) on the same DN. This causes poor ordering when
a single DN has a large number of blocks to invalidate. Blocks should be
invalidated following the order of invalidation commands -- at least roughly.
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