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From Stanislaw Kogut <sko...@sistyma.net>
Subject Re: HBase 0.20.5 issues
Date Tue, 29 Jun 2010 17:29:00 GMT
1. Stopping hbase
2. Removing hbase.root.dir from hdfs
3. Starting hbase
4. Doing major_compact on .META.
5. Starting PE

10/06/29 20:17:30 INFO hbase.PerformanceEvaluation: Table {NAME =>
'TestTable', FAMILIES => [{NAME => 'info', COMPRESSION => 'NONE', VERSIONS
=> '3', TTL => '2147483647', BLOCKSIZE => '65536', IN_MEMORY => 'false',
BLOCKCACHE => 'true'}]} created
10/06/29 20:17:30 INFO hbase.PerformanceEvaluation: Start class
org.apache.hadoop.hbase.PerformanceEvaluation$SequentialWriteTest at offset
0 for 1048576 rows
10/06/29 20:17:42 INFO hbase.PerformanceEvaluation: 0/104857/1048576
10/06/29 20:17:55 INFO hbase.PerformanceEvaluation: 0/209714/1048576
10/06/29 20:18:13 INFO hbase.PerformanceEvaluation: 0/314571/1048576
10/06/29 20:18:29 INFO hbase.PerformanceEvaluation: 0/419428/1048576
10/06/29 20:22:37 ERROR hbase.PerformanceEvaluation: Failed
org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact
region server  -- nothing found, no 'location' returned,
tableName=TestTable, reload=true -- for region , row '0000511450', but
failed after 11 attempts.
Exceptions:
java.io.IOException: HRegionInfo was null or empty in .META.
org.apache.hadoop.hbase.TableNotFoundException: TestTable
org.apache.hadoop.hbase.TableNotFoundException: TestTable
org.apache.hadoop.hbase.TableNotFoundException: TestTable
org.apache.hadoop.hbase.TableNotFoundException: TestTable
org.apache.hadoop.hbase.TableNotFoundException: TestTable
org.apache.hadoop.hbase.TableNotFoundException: TestTable
org.apache.hadoop.hbase.TableNotFoundException: TestTable
org.apache.hadoop.hbase.TableNotFoundException: TestTable
org.apache.hadoop.hbase.TableNotFoundException: TestTable

    at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.getRegionLocationForRowWithRetries(HConnectionManager.java:1087)
    at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.access$200(HConnectionManager.java:240)
    at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers$Batch.getRegionName(HConnectionManager.java:1183)
    at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers$Batch.process(HConnectionManager.java:1160)
    at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.processBatchOfRows(HConnectionManager.java:1230)
    at org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:666)
    at
org.apache.hadoop.hbase.PerformanceEvaluation$Test.testTakedown(PerformanceEvaluation.java:621)
    at
org.apache.hadoop.hbase.PerformanceEvaluation$Test.test(PerformanceEvaluation.java:637)
    at
org.apache.hadoop.hbase.PerformanceEvaluation.runOneClient(PerformanceEvaluation.java:889)
    at
org.apache.hadoop.hbase.PerformanceEvaluation.runNIsOne(PerformanceEvaluation.java:907)
    at
org.apache.hadoop.hbase.PerformanceEvaluation.runTest(PerformanceEvaluation.java:939)
    at
org.apache.hadoop.hbase.PerformanceEvaluation.doCommandLine(PerformanceEvaluation.java:1036)
    at
org.apache.hadoop.hbase.PerformanceEvaluation.main(PerformanceEvaluation.java:1061)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:186)


On Tue, Jun 29, 2010 at 8:03 PM, Stack <stack@duboce.net> wrote:

> For sure you are removing the hbase dir in hdfs?
>
> Try major compaction of your .META. table?
>
> hbase> major_compact ".META."
>
> You seem to be suffering  HBASE-1880 but if you are removing the hbase
> dir, you shouldn't be running into this.
>
> St.Ack
>
>
-- 
Regards,
Stanislaw Kogut
Sistyma LLC

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