Jinglun created HDFS-15730:
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Summary: Erasure Coding: Fix unit test bug of
TestAddOverReplicatedStripedBlocks.testProcessOverReplicatedAndCorruptStripedBlock.
Key: HDFS-15730
URL: https://issues.apache.org/jira/browse/HDFS-15730
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Jinglun
I'm working on ec replication and find a bug of the test case:
TestAddOverReplicatedStripedBlocks#testProcessOverReplicatedAndCorruptStripedBlock.
The test case added 2 redundant block then check the block indices. It wrote
'the redundant internal blocks will not be deleted before the corrupted block
gets reconstructed.'
But actually the redundant block could be deleted when there is corrupted
block. The reason the test could pass is it runs very fast and checks the block
indices before the redundant block is deleted and reported to the NameNode.
The patch is both a fix and an explanation of the bug.
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