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From "Aravind Gottipati (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-5929) HBaseAdmin.majorCompact and hbase shell randomly throw exceptions when asked to majorcompact regions.
Date Thu, 03 May 2012 19:08:49 GMT
Aravind Gottipati created HBASE-5929:
----------------------------------------

             Summary: HBaseAdmin.majorCompact and hbase shell randomly throw exceptions when
asked to majorcompact regions.
                 Key: HBASE-5929
                 URL: https://issues.apache.org/jira/browse/HBASE-5929
             Project: HBase
          Issue Type: Bug
          Components: client, shell
    Affects Versions: 0.92.1
         Environment: Linux Ubuntu Lucid 64bit
            Reporter: Aravind Gottipati
            Priority: Minor


I have been noticing that calls to HBaseAdmin.majorCompact throws exceptions randomly for
some regions.  I could not find a pattern to these exception.  The code I have simply does
this admin.majorCompact(region.getRegionNameAsString()).  admin is an instance of HBaseAdmin
and region is an instance of HRegionInfo.  The exception I get is 

org.apache.hadoop.hbase.TableNotFoundException: -ROOT-,,0
        at org.apache.hadoop.hbase.client.HBaseAdmin.tableNameString(HBaseAdmin.java:1473)
~[hbase-0.92.1.jar:0.92.1]
        at org.apache.hadoop.hbase.client.HBaseAdmin.compact(HBaseAdmin.java:1235) ~[hbase-0.92.1.jar:0.92.1]
        at org.apache.hadoop.hbase.client.HBaseAdmin.majorCompact(HBaseAdmin.java:1209) ~[hbase-0.92.1.jar:0.92.1]
        at com.stumbleupon.hbaseadmin.HBaseCompact.compactAllServers(Unknown Source) [hbase_compact.jar:na]


In this case it's the root region, but I get similar exceptions for other tables, like this.


2012-05-03 19:03:42,994 WARN  [main] HBaseCompact: Could not compact:
org.apache.hadoop.hbase.TableNotFoundException: ad_daily,49842:2009-07-10,1269763588508.1997607018
        at org.apache.hadoop.hbase.client.HBaseAdmin.tableNameString(HBaseAdmin.java:1473)
~[hbase-0.92.1.jar:0.92.1]
        at org.apache.hadoop.hbase.client.HBaseAdmin.compact(HBaseAdmin.java:1235) ~[hbase-0.92.1.jar:0.92.1]
        at org.apache.hadoop.hbase.client.HBaseAdmin.majorCompact(HBaseAdmin.java:1209) ~[hbase-0.92.1.jar:0.92.1]
        at org.apache.hadoop.hbase.client.HBaseAdmin.majorCompact(HBaseAdmin.java:1196) ~[hbase-0.92.1.jar:0.92.1]
        at com.stumbleupon.hbaseadmin.HBaseCompact.compactAllServers(Unknown Source) [hbase_compact.jar:na]
        at com.stumbleupon.hbaseadmin.HBaseCompact.main(Unknown Source) [hbase_compact.jar:na]


I see this on hbase shell as well.  However, I don't see these exceptions if I use admin.majorCompact(region.getRegionName()),
so it looks like something gets lost when I use getRegionNameAsString().

Let me know if I can provide more information.


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