Hi Qiao,


If you go into the hbase shell, and do the following:



scan “TRAFODION._MD_.VERSIONS”



What happens? If HBase is up and working correctly, and if nothing has been
corrupted, this should return 3 rows.



Dave



*From:* 乔彦克 [mailto:qya...@gmail.com]
*Sent:* Wednesday, September 21, 2016 8:13 PM
*To:* u...@trafodion.incubator.apache.org
*Cc:* dev <dev@trafodion.incubator.apache.org>
*Subject:* Re: Trafodion meta table region in hbase cannot be opened



I tried to assign the region by hand in hbase shell, but still cannot open
regions.

Below is the log errors while do some basic query.

SQL>get tables;



*** ERROR[1398] Error -704 occured while accessing the hbase subsystem. Fix
that error and make sure hbase is up and running. Error Details:

org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed after
attempts=21, exceptions:

Thu Sep 22 10:26:02 CST 2016, null, java.net.SocketTimeoutException:
callTimeout=600000, callDuration=792843: row '' on table
'TRAFODION._MD_.VERSIONS' at
region=TRAFODION._MD_.VERSIONS,,1474445084590.0350ce973b1e43e17b2d14ec72b7f867.,
hostname=hadoop2slave7,60020,1474442934725, seqNum=2



org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.throwEnrichedException(RpcRetryingCallerWithReadReplicas.java:270)

org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:203)

org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:57)

org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:200)

org.apache.hadoop.hbase.client.ClientScanner.call(ClientScanner.java:294)

org.apache.hadoop.hbase.client.ClientScanner.nextScanner(ClientScanner.java:269)

org.apache.hadoop.hbase.client.ClientScanner.initializeScannerInConstruction(ClientScanner.java:141)

org.apache.hadoop.hbase.client.ClientScanner.<init>(ClientScanner.java:136)

org.apache.hadoop.hbase.client.HTable.getScanner(HTable.java:886)

org.apache.hadoop.hbase.client.transactional.TransactionalTable.getScanner(TransactionalTable.java:813)

org.apache.hadoop.hbase.client.transactional.RMInterface.getScanner(RMInterface.java:428)

org.trafodion.sql.HTableClient.startScan(HTableClient.java:983)

.  [2016-09-22 11:09:54]



Best regards,

Qiao



乔彦克 <qya...@gmail.com>于2016年9月22日周四 上午11:07写道:

Hi, deal group,

        Yesterday after I restarted the HBase regionservers(cause one is
down, I want to restart all the regionservers for load balance), there are
7 Trafodion table regions cannot be opened. And I cannot log in to the
Trafodion shell using 'trafci'.

Does anyone get stuck by this problem ever?

How Can I recover my trafodion to normal state?

[image: region not open.png]



Any reply is appreciated.

Thanks,

Qiao

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