Race Between Log Splitting and Log Writing
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Key: HBASE-2593
URL: https://issues.apache.org/jira/browse/HBASE-2593
Project: Hadoop HBase
Issue Type: Bug
Components: master, regionserver
Affects Versions: 0.21.0
Reporter: Nicolas Spiegelberg
Assignee: Nicolas Spiegelberg
Priority: Critical
Fix For: 0.21.0
The current method for recovering the lease in HLog.splitLog() is flawed.
Between the time that the regionserver is marked as dead and fs.append is
issued, the regionserver could exit a GC pause and maintain the lease. In this
case, fs.append() would continually fail. The master needs to not only recover
the lease in splitLog but also break the lease so regionserver writes will no
longer pass.
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