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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8619) [HBase Client]: Improve client to retry if master is down when requesting getHTableDescriptor
Date Sun, 20 Oct 2013 21:08:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13800231#comment-13800231
] 

Lars Hofhansl commented on HBASE-8619:
--------------------------------------

[~eclark], are you still working on this?

> [HBase Client]: Improve client to retry if master is down when requesting getHTableDescriptor
> ---------------------------------------------------------------------------------------------
>
>                 Key: HBASE-8619
>                 URL: https://issues.apache.org/jira/browse/HBASE-8619
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>    Affects Versions: 0.94.8
>            Reporter: Aleksandr Shulman
>            Assignee: Elliott Clark
>            Priority: Minor
>             Fix For: 0.94.13
>
>
> In our rolling upgrade testing, running ImportTsv failed in the job submission phase
when the master was down. This was when the master was failing over to the backup master.
In this case, a retry would have been helpful and made sure that the job would get submitted.
> A good solution would be to refresh the master information before placing the call to
getHTableDescriptor.
> Command:
> {code} sudo -u hbase hbase org.apache.hadoop.hbase.mapreduce.ImportTsv -Dimporttsv.columns=HBASE_ROW_KEY,c1,c2,c3
-Dimporttsv.bulk.output=/user/hbase/storeFiles2_2/import2_table1369439156 import2_table1369439156
/user/hbase/tsv2{code}
> Here is the stack trace:
> {code} 13/05/24 16:55:49 INFO compress.CodecPool: Got brand-new compressor [.deflate]
> 16:45:44  Exception in thread "main" java.lang.reflect.UndeclaredThrowableException
> 16:45:44  	at $Proxy7.getHTableDescriptors(Unknown Source)
> 16:45:44  	at org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getHTableDescriptor(HConnectionManager.java:1861)
> 16:45:44  	at org.apache.hadoop.hbase.client.HTable.getTableDescriptor(HTable.java:440)
> 16:45:44  	at org.apache.hadoop.hbase.mapreduce.HFileOutputFormat.configureCompression(HFileOutputFormat.java:458)
> 16:45:44  	at org.apache.hadoop.hbase.mapreduce.HFileOutputFormat.configureIncrementalLoad(HFileOutputFormat.java:375)
> 16:45:44  	at org.apache.hadoop.hbase.mapreduce.ImportTsv.createSubmittableJob(ImportTsv.java:280)
> 16:45:44  	at org.apache.hadoop.hbase.mapreduce.ImportTsv.main(ImportTsv.java:424)
> 16:45:44  Caused by: java.io.IOException: Call to hbase-rolling-6.ent.cloudera.com/10.20.186.99:22001
failed on local exception: java.io.EOFException
> 16:45:44  	at org.apache.hadoop.hbase.ipc.HBaseClient.wrapException(HBaseClient.java:1030)
> 16:45:44  	at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:999)
> 16:45:44  	at org.apache.hadoop.hbase.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:86)
> 16:45:44  	... 7 more
> 16:45:44  Caused by: java.io.EOFException
> 16:45:44  	at java.io.DataInputStream.readInt(DataInputStream.java:375)
> 16:45:44  	at org.apache.hadoop.hbase.ipc.HBaseClient$Connection.receiveResponse(HBaseClient.java:646)
> 16:45:44  	at org.apache.hadoop.hbase.ipc.HBaseClient$Connection.run(HBaseClient.java:580){code}



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