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From "zhoushuaifeng (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-3969) Outdated data can not be cleaned in time
Date Thu, 09 Jun 2011 07:21:59 GMT
Outdated data can not be cleaned in time
----------------------------------------

                 Key: HBASE-3969
                 URL: https://issues.apache.org/jira/browse/HBASE-3969
             Project: HBase
          Issue Type: Improvement
          Components: regionserver
    Affects Versions: 0.90.3, 0.90.2, 0.90.1
            Reporter: zhoushuaifeng
             Fix For: 0.90.4


Compaction checker will send regions to the compact queue to do compact. But the priority
of these regions is too low if these regions have only a few storefiles. When there is large
through output, and the compact queue will aways have some regions with higher priority. This
may causing the major compact be delayed for a long time(even a few days),  and outdated data
cleaning will also be delayed.
In our test case, we found some regions sent to the queue by major compact checker hunging
in the queue for more than 2 days! Some scanners on these regions cannot get availably data
for a long time and lease expired.

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