ramkrishna.s.vasudevan created HBASE-6050:
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Summary: HLogSplitter renaming recovered.edits and CJ removing the
parent directory races, making the HBCK to think cluster is inconsistent.
Key: HBASE-6050
URL: https://issues.apache.org/jira/browse/HBASE-6050
Project: HBase
Issue Type: Bug
Reporter: ramkrishna.s.vasudevan
The scenario is like this
-> A region is getting splitted.
-> The master is still not processed the split .
-> Region server goes down.
-> Split log manager starts splitting the logs and creates the recovered.edits
in the splitlog path.
-> CJ starts and deletes the entry from META and also just completes the
deletion of the region dir.
-> in hlogSplitter on final step we rename the recovered.edits to come under
the regiondir.
There if the regiondir doesnot exist we tend to create and then add the
recovered.edits.
Because of this HBCK thinks it to be an orphan region because we have the
regiondir but with no regioninfo.
Ideally cluster is fine but we it is misleading.
{code}
} else {
Path dstdir = dst.getParent();
if (!fs.exists(dstdir)) {
if (!fs.mkdirs(dstdir)) LOG.warn("mkdir failed on " + dstdir);
}
}
fs.rename(src, dst);
LOG.debug(" moved " + src + " => " + dst);
} else {
LOG.debug("Could not move recovered edits from " + src +
" as it doesn't exist");
}
}
archiveLogs(null, corruptedLogs, processedLogs,
oldLogDir, fs, conf);
{code}
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