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Posted to issues@hbase.apache.org by "Will Hardman (JIRA)" <ji...@apache.org> on 2016/01/19 11:48:40 UTC
[jira] [Commented] (HBASE-14533) Thrift client gets "AsyncProcess:
Failed to get region location .... closed"
[ https://issues.apache.org/jira/browse/HBASE-14533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15106576#comment-15106576 ]
Will Hardman commented on HBASE-14533:
--------------------------------------
Hi all,
(My first JIRA post)
I can confirm that I have an application which experiences exactly the same error and stack trace as Pankaj's, above.
Application is a Python client connecting to HBase on HDP 2.3 using the Thrift bindings from the Happybase library. Error is thrown after 10 - 15 mins of near-continuous mini-batch insertions into HBase. The error occurs regardless of whether the Thrift connection is closed and reopened in between mini-batches.
I am happy to provide more information if it helps, since this is a repeatable error.
With regards,
Will
> Thrift client gets "AsyncProcess: Failed to get region location .... closed"
> ----------------------------------------------------------------------------
>
> Key: HBASE-14533
> URL: https://issues.apache.org/jira/browse/HBASE-14533
> Project: HBase
> Issue Type: Bug
> Components: REST, Thrift
> Affects Versions: 1.0.0
> Reporter: stack
> Assignee: stack
> Attachments: 14533.test.patch, 14533v2.branch-1.patch, test.patch
>
>
> An internal python client has been getting below stack trace since HBASE-134347
> {code}
> 2015-09-30 11:27:31,670 runner ERROR : scheduler executor error
> 2015-09-30 11:27:31,674 runner ERROR : Traceback (most recent call last):
> File "/opt/cops/cops-related-ticket-info-fetcher/fetcher/.virtenv/lib/python2.6/site-packages/CopsRtiFetcher-0.1-py2.6.egg/cops_rti/fetcher/runner.py", line 82, in run
> fetch_list = self.__scheduler_executor.run()
> File "/opt/cops/cops-related-ticket-info-fetcher/fetcher/.virtenv/lib/python2.6/site-packages/CopsRtiFetcher-0.1-py2.6.egg/cops_rti/fetcher/scheduler.py", line 35, in run
> with self.__fetch_db_dao.get_scanner() as scanner:
> File "/opt/cops/cops-related-ticket-info-fetcher/fetcher/.virtenv/lib/python2.6/site-packages/CopsHbaseCommon-f796bf2929be11c26536c3e8f3e9c0b0ecb382b3-py2.6.egg/cops/hbase/common/hbase_dao.py", line 57, in get_scanner
> caching=caching, field_filter_list=field_filter_list)
> File "/opt/cops/cops-related-ticket-info-fetcher/fetcher/.virtenv/lib/python2.6/site-packages/CopsHbaseCommon-f796bf2929be11c26536c3e8f3e9c0b0ecb382b3-py2.6.egg/cops/hbase/common/hbase_client_template.py", line 104, in get_entity_scanner
> self.__fix_cfs(self.__filter_columns(field_filter_list)), caching)
> File "/opt/cops/cops-related-ticket-info-fetcher/fetcher/.virtenv/lib/python2.6/site-packages/CopsHbaseCommon-f796bf2929be11c26536c3e8f3e9c0b0ecb382b3-py2.6.egg/cops/hbase/common/hbase_entity_scanner.py", line 81, in open
> self.__scanner_id = client.scannerOpenWithScan(table_name, scan)
> File "/opt/cops/cops-related-ticket-info-fetcher/.crepo/cops-hbase-common/ext-py/hbase/Hbase.py", line 1494, in scannerOpenWithScan
> return self.recv_scannerOpenWithScan()
> File "/opt/cops/cops-related-ticket-info-fetcher/.crepo/cops-hbase-common/ext-py/hbase/Hbase.py", line 1518, in recv_scannerOpenWithScan
> raise result.io
> IOError: IOError(message="org.apache.hadoop.hbase.client.RetriesExhaustedException: Can't get the location\n\tat org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:308)\n\tat org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:149)\n\tat org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:57)\n\tat org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:200)\n\tat org.apache.hadoop.hbase.client.ClientScanner.call(ClientScanner.java:293)\n\tat org.apache.hadoop.hbase.client.ClientScanner.nextScanner(ClientScanner.java:268)\n\tat org.apache.hadoop.hbase.client.ClientScanner.initializeScannerInConstruction(ClientScanner.java:140)\n\tat org.apache.hadoop.hbase.client.ClientScanner.<init>(ClientScanner.java:135)\n\tat org.apache.hadoop.hbase.client.HTable.getScanner(HTable.java:888)\n\tat org.apache.hadoop.hbase.thrift.ThriftServerRunner$HBaseHandler.scannerOpenWithScan(ThriftServerRunner.java:1446)\n\tat sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)\n\tat sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n\tat java.lang.reflect.Method.invoke(Method.java:606)\n\tat org.apache.hadoop.hbase.thrift.HbaseHandlerMetricsProxy.invoke(HbaseHandlerMetricsProxy.java:67)\n\tat com.sun.proxy.$Proxy14.scannerOpenWithScan(Unknown Source)\n\tat org.apache.hadoop.hbase.thrift.generated.Hbase$Processor$scannerOpenWithScan.getResult(Hbase.java:4609)\n\tat org.apache.hadoop.hbase.thrift.generated.Hbase$Processor$scannerOpenWithScan.getResult(Hbase.java:4593)\n\tat org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)\n\tat org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)\n\tat org.apache.hadoop.hbase.thrift.ThriftServerRunner$3.process(ThriftServerRunner.java:502)\n\tat org.apache.hadoop.hbase.thrift.TBoundedThreadPoolServer$ClientConnnection.run(TBoundedThreadPoolServer.java:289)\n\tat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)\n\tat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)\n\tat java.lang.Thread.run(Thread.java:745)\nCaused by: java.io.IOException: hconnection-0xa8e1bf9 closed\n\tat org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1117)\n\tat org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:299)\n\t... 23 more\n")
> {code}
> On the thrift server side we see this:
> {code}
> 2015-09-30 07:22:59,427 ERROR org.apache.hadoop.hbase.client.AsyncProcess: Failed to get region location
> java.io.IOException: hconnection-0x4142991e closed
> at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1117)
> at org.apache.hadoop.hbase.client.AsyncProcess.submit(AsyncProcess.java:369)
> at org.apache.hadoop.hbase.client.AsyncProcess.submit(AsyncProcess.java:320)
> at org.apache.hadoop.hbase.client.BufferedMutatorImpl.backgroundFlushCommits(BufferedMutatorImpl.java:206)
> at org.apache.hadoop.hbase.client.BufferedMutatorImpl.flush(BufferedMutatorImpl.java:183)
> at org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:1496)
> at org.apache.hadoop.hbase.client.HTable.put(HTable.java:1107)
> at org.apache.hadoop.hbase.thrift.ThriftServerRunner$HBaseHandler.mutateRowTs(ThriftServerRunner.java:1256)
> at org.apache.hadoop.hbase.thrift.ThriftServerRunner$HBaseHandler.mutateRow(ThriftServerRunner.java:1209)
> at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at org.apache.hadoop.hbase.thrift.HbaseHandlerMetricsProxy.invoke(HbaseHandlerMetricsProxy.java:67)
> at com.sun.proxy.$Proxy14.mutateRow(Unknown Source)
> at org.apache.hadoop.hbase.thrift.generated.Hbase$Processor$mutateRow.getResult(Hbase.java:4334)
> at org.apache.hadoop.hbase.thrift.generated.Hbase$Processor$mutateRow.getResult(Hbase.java:4318)
> at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
> at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)
> at org.apache.hadoop.hbase.thrift.ThriftServerRunner$3.process(ThriftServerRunner.java:502)
> at org.apache.hadoop.hbase.thrift.TBoundedThreadPoolServer$ClientConnnection.run(TBoundedThreadPoolServer.java:289)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> {code}
> HBASE-13437 has us actual execute a close on timeout -- before we'd mark connection closed but would never call close on it.
> A background chore is going around stamping Connections in the ConnectionCache as 'closed' if they have not been used in ten minutes. The 'close' can come in at any time..... In particular between the point at which we get the table/connection and when we go to use it: i.e. flush puts. It is at the flush puts point that we get the above 'AsyncProcess: Failed to get region location' (It is not a failure to find region location but rather our noticing that the connection has been closed).
> Attempts at reproducing this issue locally letting the Connection timeout can generate the above exception if a certain dance is done but it is hard to do; I am not reproducing the actual usage by the aforementioned client.
> Next steps would be setting up python client talking via thrift and then try using connection after it has been evicted from the connection cache. Another thing to try is a pool of connections on the python side...connections are identified by user and table.
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