RE: how to solve this problem?

Wed, 27 Jul 2011 04:37:30 -0700 

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


-----Original Message-----
From: shanmuganathan.r [mailto:[email protected]]
Sent: Wednesday, July 27, 2011 4:43 PM
To: [email protected]
Subject: how to solve this problem?

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$HConnectionImplementation.<init>(HConnectionManager.java:292)
    at 
org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManager.java:155)
    at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:167)
    at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:145)
    at 
com.zoho.ips.db.HBaseUtil.addNewSingleColumnFamilyValue(HBaseUtil.java:46)
    at com.zoho.ips.hbase.IPSKeyData.addData(IPSKeyData.java:26)
    at com.zoho.ips.IPSService.installService(IPSService.java:61)
    at com.zoho.ips.IPSService.install(IPSService.java:34)
    at testi.main(testi.java:6)
Caused by: java.io.IOException: Too many open files
    at sun.nio.ch.IOUtil.initPipe(Native Method)
    at sun.nio.ch.EPollSelectorImpl.<init>(EPollSelectorImpl.java:49)
    at 
sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:18)
    at java.nio.channels.Selector.open(Selector.java:209)
    at org.apache.zookeeper.ClientCnxn.<init>(ClientCnxn.java:160)
    at org.apache.zookeeper.ClientCnxn.<init>(ClientCnxn.java:331)
    at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:377)
    at org.apache.hadoop.hbase.zookeeper.ZKUtil.connect(ZKUtil.java:97)
    at 
org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:119)
    at 
org.apache.hadoop.hbase.client.HConnectionManager$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$HConnectionImplementation.<init>(HConnectionManager.java:292)
    at 
org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManager.java:155)
    at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:167)
    at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:145)
    at 
com.zoho.ips.db.HBaseUtil.addNewSingleColumnFamilyValue(HBaseUtil.java:46)
    ... 4 more
Caused by: java.io.IOException: Too many open files
    at sun.nio.ch.IOUtil.initPipe(Native Method)
    at sun.nio.ch.EPollSelectorImpl.<init>(EPollSelectorImpl.java:49)
    at 
sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:18)
    at java.nio.channels.Selector.open(Selector.java:209)
    at org.apache.zookeeper.ClientCnxn.<init>(ClientCnxn.java:160)
    at org.apache.zookeeper.ClientCnxn.<init>(ClientCnxn.java:331)
    at org.apache.zookeeper.ZooKeeper.<init>(ZooKeeper.java:377)
    at org.apache.hadoop.hbase.zookeeper.ZKUtil.connect(ZKUtil.java:97)
    at 
org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:119)
    at 
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getZooKeeperWatcher(HConnectionManager.java:986)
    ... 10 more


Please give me your valuable suggestion regarding this problem.

Thanks in advance .....


Regards


Shanmuganathan

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