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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-645) EOFException opening region (HBASE-550 redux)
Date Tue, 27 May 2008 18:52:03 GMT
EOFException opening region (HBASE-550 redux)
---------------------------------------------

                 Key: HBASE-645
                 URL: https://issues.apache.org/jira/browse/HBASE-645
             Project: Hadoop HBase
          Issue Type: Bug
            Reporter: stack
             Fix For: 0.1.3, 0.2.0


HBASE-550 dealt w/ EOFExceptions out of write-ahead-logs.  On our cluster, I'm seeing EOFEs
out of mapfiles.   In at least one case its because index is empty.


{code}
/hbase/aa0-005-2.u.powerset.com/enwiki_080312/342351854/page/mapfiles/3485795994529467150/data
 <r 3>   31268   2008-05-27 03:40        rw-r--r--       hadoop  supergroup
/hbase/aa0-005-2.u.powerset.com/enwiki_080312/342351854/page/mapfiles/3485795994529467150/index
<r 3>   246     2008-05-27 03:40        rw-r--r--       hadoop  supergroup
/hbase/aa0-005-2.u.powerset.com/enwiki_080312/342351854/page/mapfiles/4707873234615510003/data
 <r 3>   259979236       2008-05-26 22:23        rw-r--r--       hadoop  supergroup
/hbase/aa0-005-2.u.powerset.com/enwiki_080312/342351854/page/mapfiles/4707873234615510003/index
<r 3>   36689   2008-05-26 22:23        rw-r--r--       hadoop  supergroup
/hbase/aa0-005-2.u.powerset.com/enwiki_080312/342351854/page/mapfiles/7019459271582770846/data
 <r 3>   31268   2008-05-26 22:54        rw-r--r--       hadoop  supergroup
/hbase/aa0-005-2.u.powerset.com/enwiki_080312/342351854/page/mapfiles/7019459271582770846/index
<r 3>   0       2008-05-26 22:54        rw-r--r--       hadoop  supergroup
{code}

Here's the exception:
{code}
2008-05-27 18:05:08,289 DEBUG org.apache.hadoop.hbase.HStore: loaded /hbase/XX.XX.XX.XX/enwiki_080312_meta/2102573201/alternate_title/info/8844820574762678369,
isReference=false
2008-05-27 18:05:08,302 DEBUG org.apache.hadoop.hbase.HStore: Loaded 4 file(s) in hstore 2102573201/alternate_title,
max sequence id 1081299433
2008-05-27 18:05:08,315 ERROR org.apache.hadoop.hbase.HRegionServer: error opening region
enwiki_080312_meta,R-aGPvbJJ3r82Tp0_Eg2a-==,1207951923868
java.io.EOFException
        at java.io.DataInputStream.readFully(Unknown Source)
        at java.io.DataInputStream.readFully(Unknown Source)
        at org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1434)
        at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1411)
        at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1400)
        at org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1395)
        at org.apache.hadoop.io.MapFile$Reader.<init>(MapFile.java:254)
        at org.apache.hadoop.io.MapFile$Reader.<init>(MapFile.java:242)
        at org.apache.hadoop.hbase.HStoreFile$HbaseMapFile$HbaseReader.<init>(HStoreFile.java:554)
        at org.apache.hadoop.hbase.HStoreFile$BloomFilterMapFile$Reader.<init>(HStoreFile.java:609)
        at org.apache.hadoop.hbase.HStoreFile.getReader(HStoreFile.java:382)
        at org.apache.hadoop.hbase.HStore.<init>(HStore.java:849)
        at org.apache.hadoop.hbase.HRegion.<init>(HRegion.java:431)
        at org.apache.hadoop.hbase.HRegionServer.openRegion(HRegionServer.java:1258)
        at org.apache.hadoop.hbase.HRegionServer$Worker.run(HRegionServer.java:1204)
        at java.lang.Thread.run(Unknown Source)
{code}


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