I have been waiting for hours to see if it will ever start but it doesn't. I will check the links you sent me.
Thanks again for your help!!! > From: ha...@cloudera.com > Date: Fri, 13 May 2011 23:18:40 +0530 > Subject: Re: Datanode doesn't start but there is no exception in the log > To: common-user@hadoop.apache.org > > Actually, only the last mentioned stack matters. Also see: > https://issues.apache.org/jira/browse/HDFS-1835 > > On Fri, May 13, 2011 at 11:15 PM, Harsh J <ha...@cloudera.com> wrote: > > Hey, > > > > 2011/5/13 Panayotis Antonopoulos <antonopoulos...@hotmail.com>: > >> "899599744@qtp-1416044437-1 - Acceptor0 > >> SelectChannelConnector@0.0.0.0:50075" prio=10 tid=0x00007f50f8414800 > >> nid=0x1926 runnable [0x00007f50f6eb1000] > >> java.lang.Thread.State: RUNNABLE > >> at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method) > >> at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:210) > >> at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:65) > >> at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69) > >> - locked <0x00000000ec473870> (a sun.nio.ch.Util$2) > >> - locked <0x00000000ec473860> (a java.util.Collections$UnmodifiableSet) > >> - locked <0x00000000ec4733c8> (a sun.nio.ch.EPollSelectorImpl) > >> at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80) > >> at > >> org.mortbay.io.nio.SelectorManager$SelectSet.doSelect(SelectorManager.java:498) > >> at org.mortbay.io.nio.SelectorManager.doSelect(SelectorManager.java:192) > >> at > >> org.mortbay.jetty.nio.SelectChannelConnector.accept(SelectChannelConnector.java:124) > >> at > >> org.mortbay.jetty.AbstractConnector$Acceptor.run(AbstractConnector.java:708) > >> at > >> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) > > > > and, > > > >> "1620640756@qtp-1416044437-0" prio=10 tid=0x00007f50f83f0800 nid=0x1925 in > >> Object.wait() [0x00007f50f75eb000] > >> java.lang.Thread.State: TIMED_WAITING (on object monitor) > >> at java.lang.Object.wait(Native Method) > >> - waiting on <0x00000000ec473a88> (a > >> org.mortbay.thread.QueuedThreadPool$PoolThread) > >> at > >> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:626) > >> - locked <0x00000000ec473a88> (a > >> org.mortbay.thread.QueuedThreadPool$PoolThread) > > > > and, > > > >> "main" prio=10 tid=0x0000000040115000 nid=0x18d2 runnable > >> [0x00007f5101d2e000] > >> java.lang.Thread.State: RUNNABLE > >> at java.io.FileInputStream.readBytes(Native Method) > >> at java.io.FileInputStream.read(FileInputStream.java:220) > >> at > >> sun.security.provider.SeedGenerator$URLSeedGenerator.getSeedBytes(SeedGenerator.java:493) > >> at > >> sun.security.provider.SeedGenerator.generateSeed(SeedGenerator.java:117) > >> at > >> sun.security.provider.SecureRandom.engineGenerateSeed(SecureRandom.java:114) > >> at > >> sun.security.provider.SecureRandom.engineNextBytes(SecureRandom.java:171) > >> - locked <0x00000000eb430cc0> (a sun.security.provider.SecureRandom) > >> at java.security.SecureRandom.nextBytes(SecureRandom.java:433) > >> - locked <0x00000000eb430f60> (a java.security.SecureRandom) > >> at java.security.SecureRandom.next(SecureRandom.java:455) > >> at java.util.Random.nextInt(Random.java:257) > >> at > >> org.apache.hadoop.hdfs.server.datanode.DataNode.setNewStorageID(DataNode.java:608) > >> at > >> org.apache.hadoop.hdfs.server.datanode.DataNode.register(DataNode.java:629) > >> at > >> org.apache.hadoop.hdfs.server.datanode.DataNode.runDatanodeDaemon(DataNode.java:1378) > >> at > >> org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1438) > >> at > >> org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:1563) > >> at > >> org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1573) > > > > lead me to believe that you're running into this: > > http://search-hadoop.com/m/7Giae6vLWR1/securerandom&subj=Re+Entropy+Pool+and+HDFS+FS+Commands+Hanging+System > > > > Just give it some time and it should start up soon (you may generate > > some other activity on the DN to help it get some fresh entropy). > > Sometimes it may take up to a minute at start up. > > > > -- > > Harsh J > > > > > > -- > Harsh J
