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From "Ben Maurer (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-1206) Scanner spins when there are concurrent inserts to column family
Date Fri, 20 Feb 2009 04:36:04 GMT
Scanner spins when there are concurrent inserts to column family
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                 Key: HBASE-1206
                 URL: https://issues.apache.org/jira/browse/HBASE-1206
             Project: Hadoop HBase
          Issue Type: Bug
    Affects Versions: 0.19.0
            Reporter: Ben Maurer
             Fix For: 0.19.1


I had a MR job that would launch multiple scanners on a region that made updates to the same
column family as they were scanning on (but not the same column). As a result, there were
lots of processes that had to grep through all of the irrelevent inserts many times as flushes
occurred.

However, if I put the column that I was outputting to in the list of columns to scan for,
everything worked quickly.

The code that's causing this is:


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