Checksum object does not get restored to the old state in retries when handle
ChecksumException
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Key: HADOOP-1345
URL: https://issues.apache.org/jira/browse/HADOOP-1345
Project: Hadoop
Issue Type: Bug
Components: dfs
Affects Versions: 0.12.3
Reporter: Hairong Kuang
Assigned To: Hairong Kuang
Priority: Blocker
Fix For: 0.13.0
In ChecksumFile.FSInputChecker, when a ChecksumException occurs, it tries to
recover from the error by reading a different replica. However, the current
code does not restore the Checksum object's old state. This causes a read not
able to recover from ChecksumException although there are non-corrupted
replicas available if the read follows a seek to a position which is not at the
checksum chunk boundary .
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