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From "Victor Xu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-13530) Add param for bulkload wait duration in HRegion.
Date Wed, 22 Apr 2015 12:41:58 GMT
Victor Xu created HBASE-13530:

             Summary: Add param for bulkload wait duration in HRegion.
                 Key: HBASE-13530
                 URL: https://issues.apache.org/jira/browse/HBASE-13530
             Project: HBase
          Issue Type: Improvement
          Components: regionserver
    Affects Versions: 0.98.12
            Reporter: Victor Xu
            Priority: Minor
             Fix For: 0.98.13

In our scenario, incremental read/write operations and complete bulkload operations are mixed
together. Bulkload needs write lock while read/write and flush/compact need read lock. When
a region is compacting, the bulkload could hang at writeLock.tryLock(waitDuration, TimeUnit)
method. The original default waitDuration is 60sec (from 'hbase.busy.wait.duration'), and
this could block all read/writes operations from acquiring read lock for 1 minute. The chances
of this scenario become high when compaction speed limit feature(HBASE-8329) is used.
Maybe we need to decrease the wait duration ONLY for bulkload, and let read/write keep theirs.
So I add this param('hbase.bulkload.wait.duration') to tune wait duration for bulkloading.
Of course, it is a table level setting, and the default value is from original logic.

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