Modification times are being overwritten when FSImage loads
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Key: HDFS-1138
URL: https://issues.apache.org/jira/browse/HDFS-1138
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Dmytro Molkov
A very easy way to spot the bug is to do a second restart in TestRestartDFS and
check that the modification time on root is the same as it was before the
second restart.
The problem is modifying time of the parent if the modification time of the
child is greater than parent's in addToParent.
So if you have /DIR/File then on creation of a file modification time of the
DIR will be set, but on cluster restart, or when secondary is checkpointing and
reading the image it will add DIR to "/" and write the new modification time
for "/" which is the modification time of DIR.
This is clearly a bug. I will attach a patch with one more parameter being
passed from the loadFSImage that says to not propagate the time.
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