Hi Shashwat, As already mentioned already in my mail setting dfs.client.use.legacy.blockreader to true fixes the problem. This looks to be workaround or moreover disabling a feature. Would like to know, what is the exact problem?
Cheers, Subroto Sanyal On Mar 5, 2013, at 6:33 PM, shashwat shriparv wrote: > Try setting dfs.client.use.legacy.blockreader to true > > ∞ > Shashwat Shriparv > > > > On Tue, Mar 5, 2013 at 8:39 PM, 卖报的小行家 <85469...@qq.com> wrote: > Yes.It's from hadoop 2.0. I just now read the code 1.1.1.There are no such > classes the log mentioned.Maybe you can read the code first. > > > ------------------ 原始邮件 ------------------ > 发件人: "Subroto"<ssan...@datameer.com>; > 发送时间: 2013年3月5日(星期二) 晚上10:56 > 收件人: "user"<user@hadoop.apache.org>; > 主题: Re: Socket does not have a channel > > Hi Julian, > > This is from CDH4.1.2 and I think its based on Apache Hadoop 2.0. > > Cheers, > Subroto Sanyal > On Mar 5, 2013, at 3:50 PM, 卖报的小行家 wrote: > >> Hi, >> Which revision of hadoop? >> and what's the situation to report the Exception? >> BRs//Julian >> >> ------------------ Original ------------------ >> From: "Subroto"<ssan...@datameer.com>; >> Date: Tue, Mar 5, 2013 04:46 PM >> To: "user"<user@hadoop.apache.org>; >> Subject: Socket does not have a channel >> >> Hi >> >> java.lang.IllegalStateException: Socket >> Socket[addr=/10.86.203.112,port=1004,localport=35170] does not have a channel >> at >> com.google.common.base.Preconditions.checkState(Preconditions.java:172) >> at >> org.apache.hadoop.net.SocketInputWrapper.getReadableByteChannel(SocketInputWrapper.java:83) >> at >> org.apache.hadoop.hdfs.RemoteBlockReader2.newBlockReader(RemoteBlockReader2.java:432) >> at >> org.apache.hadoop.hdfs.BlockReaderFactory.newBlockReader(BlockReaderFactory.java:82) >> at >> org.apache.hadoop.hdfs.DFSInputStream.getBlockReader(DFSInputStream.java:832) >> at >> org.apache.hadoop.hdfs.DFSInputStream.blockSeekTo(DFSInputStream.java:444) >> >> While accessing the HDFS I keep getting the above mentioned error. >> Setting the dfs.client.use.legacy.blockreader to true fixes the problem. >> I would like to know what exactly is the problem? Is it a problem/bug in >> hadoop ? >> Is there is JIRA ticket for this?? >> >> >> Cheers, >> Subroto Sanyal > >
