hdfs corruption appended to blocks is not detected by fs commands or fsck
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Key: HDFS-2848
URL: https://issues.apache.org/jira/browse/HDFS-2848
Project: Hadoop HDFS
Issue Type: Bug
Affects Versions: 0.23.0
Reporter: Ravi Prakash
Assignee: Ravi Prakash
Courtesy Pat White
{quote}
Appears that there is a regression in corrupt block detection by both fsck and
fs cmds like 'cat'. Testcases for
pre-block and block-overwrite corruption of all replicas is correctly reporting
errors however post-block corruption is
not, fsck on the filesystem reports it's Healthy and 'cat' returns without
error. Looking at the DN blocks themselves,
they clearly contain the injected corruption pattern.
{quote}
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