Re: how to solve this problem?

[Gan, Xiyun]

http://wiki.apache.org/hadoop/Hbase/FAQ#A6

On Wed, Jul 27, 2011 at 7:12 PM, shanmuganathan.r
<shanmuganatha...@zohocorp.com> wrote:
> Hi All,
>
>
>            I am running the hbase in fully distributed mode. I want to create 
> a table with 500 rows . After creation of 122 rows the following exception is 
> thrown
>
> org.apache.hadoop.hbase.ZooKeeperConnectionException: java.io.IOException: 
> Too many open files
>    at 
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getZooKeeperWatcher(HConnectionManager.java:988)
>    at 
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.setupZookeeperTrackers(HConnectionManager.java:301)
>    at 
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.&lt;init&gt;(HConnectionManager.java:292)
>    at 
> org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManager.java:155)
>    at org.apache.hadoop.hbase.client.HTable.&lt;init&gt;(HTable.java:167)
>    at org.apache.hadoop.hbase.client.HTable.&lt;init&gt;(HTable.java:145)
>    at 
> com.zoho.ips.db.HBaseUtil.addNewSingleColumnFamilyValue(HBaseUtil.java:46)
>    at com.zoho.ips.hbase.IPSKeyData.addData(IPSKeyData.java:26)
>    at com.zoho.ips.IPSService.installService(IPSService.java:61)
>    at com.zoho.ips.IPSService.install(IPSService.java:34)
>    at testi.main(testi.java:6)
> Caused by: java.io.IOException: Too many open files
>    at sun.nio.ch.IOUtil.initPipe(Native Method)
>    at sun.nio.ch.EPollSelectorImpl.&lt;init&gt;(EPollSelectorImpl.java:49)
>    at 
> sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:18)
>    at java.nio.channels.Selector.open(Selector.java:209)
>    at org.apache.zookeeper.ClientCnxn.&lt;init&gt;(ClientCnxn.java:160)
>    at org.apache.zookeeper.ClientCnxn.&lt;init&gt;(ClientCnxn.java:331)
>    at org.apache.zookeeper.ZooKeeper.&lt;init&gt;(ZooKeeper.java:377)
>    at org.apache.hadoop.hbase.zookeeper.ZKUtil.connect(ZKUtil.java:97)
>    at 
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.&lt;init&gt;(ZooKeeperWatcher.java:119)
>    at 
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getZooKeeperWatcher(HConnectionManager.java:986)
>    ... 10 more
> Exception in thread "main" com.zoho.ips.IPSException: 
> IPSError:Z102:java.io.IOException: Too many open files
>    at 
> com.zoho.ips.db.HBaseUtil.addNewSingleColumnFamilyValue(HBaseUtil.java:63)
>    at com.zoho.ips.hbase.IPSKeyData.addData(IPSKeyData.java:26)
>    at com.zoho.ips.IPSService.installService(IPSService.java:61)
>    at com.zoho.ips.IPSService.install(IPSService.java:34)
>    at testi.main(testi.java:6)
> Caused by: org.apache.hadoop.hbase.ZooKeeperConnectionException: 
> java.io.IOException: Too many open files
>    at 
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getZooKeeperWatcher(HConnectionManager.java:988)
>    at 
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.setupZookeeperTrackers(HConnectionManager.java:301)
>    at 
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.&lt;init&gt;(HConnectionManager.java:292)
>    at 
> org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManager.java:155)
>    at org.apache.hadoop.hbase.client.HTable.&lt;init&gt;(HTable.java:167)
>    at org.apache.hadoop.hbase.client.HTable.&lt;init&gt;(HTable.java:145)
>    at 
> com.zoho.ips.db.HBaseUtil.addNewSingleColumnFamilyValue(HBaseUtil.java:46)
>    ... 4 more
> Caused by: java.io.IOException: Too many open files
>    at sun.nio.ch.IOUtil.initPipe(Native Method)
>    at sun.nio.ch.EPollSelectorImpl.&lt;init&gt;(EPollSelectorImpl.java:49)
>    at 
> sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:18)
>    at java.nio.channels.Selector.open(Selector.java:209)
>    at org.apache.zookeeper.ClientCnxn.&lt;init&gt;(ClientCnxn.java:160)
>    at org.apache.zookeeper.ClientCnxn.&lt;init&gt;(ClientCnxn.java:331)
>    at org.apache.zookeeper.ZooKeeper.&lt;init&gt;(ZooKeeper.java:377)
>    at org.apache.hadoop.hbase.zookeeper.ZKUtil.connect(ZKUtil.java:97)
>    at 
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.&lt;init&gt;(ZooKeeperWatcher.java:119)
>    at 
> org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getZooKeeperWatcher(HConnectionManager.java:986)
>    ... 10 more
>
>
> Please give me your valuable suggestion regarding this problem.
>
> Thanks in advance .....
>
>
> Regards
>
>
> Shanmuganathan
>



-- 
Best wishes
Gan, Xiyun