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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9635) HBase Table regions are not getting re-assigned to the new region server when it comes up (when the existing region server not able to handle the load)
Date Mon, 23 Sep 2013 18:09:09 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9635?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13774803#comment-13774803
] 

Jean-Daniel Cryans commented on HBASE-9635:
-------------------------------------------

The problem is pretty clear from the log: "Too many open files", your host is hosed.
                
> HBase Table regions are not getting re-assigned to the new region server when it comes
up (when the existing region server not able to handle the load) 
> --------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-9635
>                 URL: https://issues.apache.org/jira/browse/HBASE-9635
>             Project: HBase
>          Issue Type: Bug
>          Components: master, regionserver
>    Affects Versions: 0.94.11
>         Environment: SuSE11
>            Reporter: shankarlingayya
>
> {noformat}
> HBase Table regions are not getting assigned to the new region server for a period of
30 minutes (when the existing region server not able to handle the load)
> Procedure:
> 1. Setup Non HA Hadoop Cluster with two nodes (Node1-XX.XX.XX.XX,  Node2-YY.YY.YY.YY)
> 2. Install Zookeeper & HRegionServer in Node-1
> 3. Install HMaster & HRegionServer in Node-2
> 4. From Node2 create HBase Table ( table name 't1' with one column family 'cf1' )
> 5. Perform addrecord 99649 rows 
> 6. kill both the node Region Server and limit the Node1 Region Server FD to 600
> 7. Start only the Node1 Region server ==> so that FD exhaust can happen in Node1 Region
Server
> 8. After some 5-10 minuites start the Node2 Region Server
> ===> Huge number of regions of table 't1' are in OPENING state, which are not getting
re assigned to the Node2 region server which is free. 
> ===> When the new region server comes up then the master should detect and allocate
the open failed regions to the region server (here it is staying the OPENINING state for 30
minutes which will have huge impcat user app which makes use of this table)
> 2013-09-23 18:46:12,160 DEBUG org.apache.hadoop.hbase.regionserver.HRegion: Instantiated
t1,row507465,1379937224590.2d9fad2aee78103f928d8c7fe16ba6cd.
> 2013-09-23 18:46:12,160 ERROR org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler:
Failed open of region=t1,row507465,1379937224590.2d9fad2aee78103f928d8c7fe16ba6cd., starting
to roll back the global memstore size.
> 2013-09-23 18:50:55,284 WARN org.apache.hadoop.hdfs.LeaseRenewer: Failed to renew lease
for [DFSClient_hb_rs_HOST-XX.XX.XX.XX,61020,1379940823286_-641204614_48] for 309 seconds.
 Will retry shortly ...
> java.io.IOException: Failed on local exception: java.net.SocketException: Too many open
files; Host Details : local host is: "HOST-XX.XX.XX.XX/XX.XX.XX.XX"; destination host is:
"HOST-XX.XX.XX.XX":8020;
>         at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:764)
>         at org.apache.hadoop.ipc.Client.call(Client.java:1351)
>         at org.apache.hadoop.ipc.Client.call(Client.java:1300)
>         at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
>         at $Proxy13.renewLease(Unknown Source)
>         at sun.reflect.GeneratedMethodAccessor29.invoke(Unknown Source)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:188)
>         at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
>         at $Proxy13.renewLease(Unknown Source)
>         at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.renewLease(ClientNamenodeProtocolTranslatorPB.java:522)
>         at org.apache.hadoop.hdfs.DFSClient.renewLease(DFSClient.java:679)
>         at org.apache.hadoop.hdfs.LeaseRenewer.renew(LeaseRenewer.java:417)
>         at org.apache.hadoop.hdfs.LeaseRenewer.run(LeaseRenewer.java:442)
>         at org.apache.hadoop.hdfs.LeaseRenewer.access$700(LeaseRenewer.java:71)
>         at org.apache.hadoop.hdfs.LeaseRenewer$1.run(LeaseRenewer.java:298)
>         at java.lang.Thread.run(Thread.java:662)
> Caused by: java.net.SocketException: Too many open files
>         at sun.nio.ch.Net.socket0(Native Method)
>         at sun.nio.ch.Net.socket(Net.java:97)
>         at sun.nio.ch.SocketChannelImpl.<init>(SocketChannelImpl.java:84)
>         at sun.nio.ch.SelectorProviderImpl.openSocketChannel(SelectorProviderImpl.java:37)
>         at java.nio.channels.SocketChannel.open(SocketChannel.java:105)
>         at org.apache.hadoop.net.StandardSocketFactory.createSocket(StandardSocketFactory.java:62)
>         at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:523)
>         at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:642)
>         at org.apache.hadoop.ipc.Client$Connection.access$2600(Client.java:314)
>         at org.apache.hadoop.ipc.Client.getConnection(Client.java:1399)
>         at org.apache.hadoop.ipc.Client.call(Client.java:1318)
>         ... 16 more
> 2013-09-23 18:50:56,285 WARN org.apache.hadoop.hdfs.LeaseRenewer: Failed to renew lease
for [DFSClient_hb_rs_HOST-XX.XX.XX.XX,61020,1379940823286_-641204614_48] for 310 seconds.
 Will retry shortly ...
> java.io.IOException: Failed on local exception: java.net.SocketException: Too many open
files; Host Details : local host is: "HOST-XX.XX.XX.XX/XX.XX.XX.XX"; destination host is:
"HOST-XX.XX.XX.XX":8020;
>         at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:764)
>         at org.apache.hadoop.ipc.Client.call(Client.java:1351)
>         at org.apache.hadoop.ipc.Client.call(Client.java:1300)
>         at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
>        at $Proxy13.renewLease(Unknown Source)
>         at sun.reflect.GeneratedMethodAccessor29.invoke(Unknown Source)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:188)
>         at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
>         at $Proxy13.renewLease(Unknown Source)
>         at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.renewLease(ClientNamenodeProtocolTranslatorPB.java:522)
>         at org.apache.hadoop.hdfs.DFSClient.renewLease(DFSClient.java:679)
>         at org.apache.hadoop.hdfs.LeaseRenewer.renew(LeaseRenewer.java:417)
>         at org.apache.hadoop.hdfs.LeaseRenewer.run(LeaseRenewer.java:442)
>         at org.apache.hadoop.hdfs.LeaseRenewer.access$700(LeaseRenewer.java:71)
>         at org.apache.hadoop.hdfs.LeaseRenewer$1.run(LeaseRenewer.java:298)
>         at java.lang.Thread.run(Thread.java:662)
> Caused by: java.net.SocketException: Too many open files
>         at sun.nio.ch.Net.socket0(Native Method)
>         at sun.nio.ch.Net.socket(Net.java:97)
>         at sun.nio.ch.SocketChannelImpl.<init>(SocketChannelImpl.java:84)
>         at sun.nio.ch.SelectorProviderImpl.openSocketChannel(SelectorProviderImpl.java:37)
>         at java.nio.channels.SocketChannel.open(SocketChannel.java:105)
>         at org.apache.hadoop.net.StandardSocketFactory.createSocket(StandardSocketFactory.java:62)
>         at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:523)
>         at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:642)
>         at org.apache.hadoop.ipc.Client$Connection.access$2600(Client.java:314)
>         at org.apache.hadoop.ipc.Client.getConnection(Client.java:1399)
>         at org.apache.hadoop.ipc.Client.call(Client.java:1318)
>         ... 16 more
> 2013-09-23 18:50:57,287 WARN org.apache.hadoop.hdfs.LeaseRenewer: Failed to renew lease
for [DFSClient_hb_rs_HOST-XX.XX.XX.XX,61020,1379940823286_-641204614_48] for 311 seconds.
 Will retry shortly ...
> java.io.IOException: Failed on local exception: java.net.SocketException: Too many open
files; Host Details : local host is: "HOST-XX.XX.XX.XX/XX.XX.XX.XX"; destination host is:
"HOST-XX.XX.XX.XX":8020;
> {noformat}

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