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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-3893) HRegion.internalObtainRowLock shouldn't wait forever
Date Tue, 17 May 2011 18:21:47 GMT
HRegion.internalObtainRowLock shouldn't wait forever
----------------------------------------------------

                 Key: HBASE-3893
                 URL: https://issues.apache.org/jira/browse/HBASE-3893
             Project: HBase
          Issue Type: Improvement
    Affects Versions: 0.90.2
            Reporter: Jean-Daniel Cryans
            Priority: Blocker
             Fix For: 0.90.4


We just had a weird episode where one user was trying to insert a lot of data with overlapping
keys into a single region (all of that is a separate problem), and the region server rapidly
filled up all it's handlers + queues with those calls. Basically it wasn't deadlocked but
almost.

Worse, now that we have a 60 seconds socket timeout the clients were eventually getting the
timeout and then retrying another call to that same region server.

We should have a timeout on lockedRows.wait() in HRegion.internalObtainRowLock in order to
survive this better.

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