hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-14533) Thrift client gets "AsyncProcess: Failed to get region location .... closed"
Date Thu, 01 Oct 2015 14:04:28 GMT
stack created HBASE-14533:
-----------------------------

             Summary: 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


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.





--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message