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From chandu banavaram <chandu.banava...@gmail.com>
Subject Re: LeaseExpiredException : Lease mismatch in Hadoop mapReduce| How to solve?
Date Fri, 15 Nov 2013 07:16:44 GMT
thanks


On Thu, Nov 14, 2013 at 10:18 PM, unmesha sreeveni <unmeshabiju@gmail.com>wrote:

> @chandu banavaram:
> This exception usually happens if hdfs is trying to write into a file
> which is no more in hdfs..
>
> I think in my case certain files are not created in my hdfs.it failed to
> create due to some permissions.
>
> I am trying out.
>
>
> On Wed, Nov 13, 2013 at 9:25 AM, unmesha sreeveni <unmeshabiju@gmail.com>wrote:
>
>> :) Ok
>> Why u also experienced the same?
>>
>>
>> On Tue, Nov 12, 2013 at 5:14 PM, chandu banavaram <
>> chandu.banavaram@gmail.com> wrote:
>>
>>> plz send the answer to me  for this query
>>>
>>>
>>> On Tue, Nov 12, 2013 at 2:52 AM, unmesha sreeveni <unmeshabiju@gmail.com
>>> > wrote:
>>>
>>>> While running job with 90 Mb file i am getting LeaseExpiredException
>>>>
>>>> 13/11/12 15:46:41 WARN mapred.JobClient: Use GenericOptionsParser for
>>>> parsing the arguments. Applications should implement Tool for the same.
>>>> 13/11/12 15:46:42 INFO input.FileInputFormat: Total input paths to
>>>> process : 1
>>>> 13/11/12 15:46:43 INFO mapred.JobClient: Running job:
>>>> job_201310301645_25033
>>>>  13/11/12 15:46:44 INFO mapred.JobClient:  map 0% reduce 0%
>>>> 13/11/12 15:46:56 INFO mapred.JobClient: Task Id :
>>>> attempt_201310301645_25033_m_000000_0, Status : FAILED
>>>> org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException):
>>>> Lease mismatch on /user/hdfs/in/map owned by
>>>> DFSClient_NONMAPREDUCE_-1622335545_1 but is accessed by
>>>> DFSClient_NONMAPREDUCE_-1561990512_1
>>>>  at
>>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:2459)
>>>> at
>>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:2437)
>>>>  at
>>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.completeFileInternal(FSNamesystem.java:2503)
>>>> at
>>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.completeFile(FSNamesystem.java:2480)
>>>>  at
>>>> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.complete(NameNodeRpcServer.java:556)
>>>> at
>>>> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.complete(ClientNamenodeProtocolServerSideTranslatorPB.java:337)
>>>>  at
>>>> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:44958)
>>>>  at org.
>>>> attempt_201310301645_25033_m_000000_0: SLF4J: Class path contains
>>>> multiple SLF4J bindings.
>>>> attempt_201310301645_25033_m_000000_0: SLF4J: Found binding in
>>>> [jar:file:/usr/lib/zookeeper/lib/slf4j-log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
>>>> attempt_201310301645_25033_m_000000_0: SLF4J: Found binding in
>>>> [jar:file:/tmp/hadoop-mapred/mapred/local/taskTracker/hdfs/jobcache/job_201310301645_25033/jars/job.jar!/org/slf4j/impl/StaticLoggerBinder.class]
>>>> attempt_201310301645_25033_m_000000_0: SLF4J: See
>>>> http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
>>>>  13/11/12 15:47:02 INFO mapred.JobClient: Task Id :
>>>> attempt_201310301645_25033_m_000000_1, Status : FAILED
>>>> org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException):
>>>> Lease mismatch on /user/hdfs/in/map owned by
>>>> DFSClient_NONMAPREDUCE_-1622335545_1 but is accessed by
>>>> DFSClient_NONMAPREDUCE_-1662926329_1
>>>>  at
>>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:2459)
>>>> at
>>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.analyzeFileState(FSNamesystem.java:2262)
>>>>  at
>>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2175)
>>>> at
>>>> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:501)
>>>>  at
>>>> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:299)
>>>>  at
>>>> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:44954)
>>>>  at
>>>> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java
>>>> attempt_201310301645_25033_m_000000_1: SLF4J: Class path contains
>>>> multiple SLF4J bindings.
>>>> attempt_201310301645_25033_m_000000_1: SLF4J: Found binding in
>>>> [jar:file:/usr/lib/zookeeper/lib/slf4j-log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
>>>> attempt_201310301645_25033_m_000000_1: SLF4J: Found binding in
>>>> [jar:file:/tmp/hadoop-mapred/mapred/local/taskTracker/hdfs/jobcache/job_201310301645_25033/jars/job.jar!/org/slf4j/impl/StaticLoggerBinder.class]
>>>> attempt_201310301645_25033_m_000000_1: SLF4J: See
>>>> http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
>>>> attempt_201310301645_25033_m_000000_1: log4j:WARN No appenders could be
>>>> found for logger (org.apache.hadoop.hdfs.DFSClient).
>>>> attempt_201310301645_25033_m_000000_1: log4j:WARN Please initialize the
>>>> log4j system properly.
>>>> attempt_201310301645_25033_m_000000_1: log4j:WARN See
>>>> http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
>>>> 13/11/12 15:47:10 INFO mapred.JobClient: Task Id :
>>>> attempt_201310301645_25033_m_000001_0, Status : FAILED
>>>> org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.LeaseExpiredException):
>>>> No lease on /user/hdfs/in/map: File is not open for writing. Holder
>>>> DFSClient_NONMAPREDUCE_-1622335545_1 does not have any open files.
>>>>  at
>>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:2452)
>>>> at
>>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkLease(FSNamesystem.java:2437)
>>>>  at
>>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.completeFileInternal(FSNamesystem.java:2503)
>>>> at
>>>> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.completeFile(FSNamesystem.java:2480)
>>>>  at
>>>> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.complete(NameNodeRpcServer.java:556)
>>>> at
>>>> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.complete(ClientNamenodeProtocolServerSideTranslatorPB.java:337)
>>>>  at
>>>> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:44958)
>>>>
>>>> Why is it so?
>>>> My mapper code is
>>>>
>>>> public void map(Object key, Text value, Context context)
>>>> throws IOException, InterruptedException {
>>>>  Configuration conf = new Configuration();
>>>> FileSystem fs = FileSystem.get(conf);
>>>>
>>>>  Path inputfile = new Path("in/map");
>>>>  BufferedWriter getdatabuffer = new BufferedWriter(new
>>>> OutputStreamWriter(fs.create(inputfile)));
>>>>    getdatabuffer.write(value.toString());
>>>>    getdatabuffer.close();
>>>> Path Attribute = new Path("in/Attribute");
>>>>     int row =0;
>>>>         BufferedReader read = new BufferedReader(new
>>>> InputStreamReader(fs.open(inputfile)));
>>>>         String str = null;
>>>>         while((str = read.readLine())!=null){
>>>>
>>>>         row++; //total row count
>>>>         StringTokenizer st =new StringTokenizer(str," ");
>>>>         col = st.countTokens();
>>>>       }
>>>>         read.close();
>>>> ...........
>>>> ...........
>>>> .............
>>>> ............
>>>> Further computation is based on the above "map" file.
>>>>
>>>> Why this happens?
>>>> I think it is unable to write into in/map for several times.
>>>> How to get rid of this?
>>>> *Any Suggestions?*
>>>>
>>>> --
>>>> *Thanks & Regards*
>>>>
>>>> Unmesha Sreeveni U.B
>>>>
>>>> *Junior Developer*
>>>>
>>>>
>>>>
>>>
>>
>>
>> --
>> *Thanks & Regards*
>>
>> Unmesha Sreeveni U.B
>>
>> *Junior Developer*
>>
>>
>>
>
>
> --
> *Thanks & Regards*
>
> Unmesha Sreeveni U.B
>
> *Junior Developer*
>
>
>

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