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From ghufran malik <ghufran1ma...@gmail.com>
Subject Re: Master/Agreggators
Date Thu, 03 Apr 2014 16:24:13 GMT
After a while of those info jobs been printed this is printed out after:

14/04/03 17:01:25 INFO zookeeper.ClientCnxn: Unable to read additional data
from server sessionid 0x145284966610002, likely server has closed socket,
closing socket connection and attempting reconnect
14/04/03 17:01:26 INFO mapred.JobClient:  map 50% reduce 0%
14/04/03 17:01:27 INFO zookeeper.ClientCnxn: Opening socket connection to
server ghufran/127.0.1.1:22181. Will not attempt to authenticate using SASL
(unknown error)
14/04/03 17:01:27 WARN zookeeper.ClientCnxn: Session 0x145284966610002 for
server null, unexpected error, closing socket connection and attempting
reconnect
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
14/04/03 17:01:27 WARN zk.ZooKeeperExt: exists: Connection loss on attempt
0, waiting 5000 msecs before retrying.
org.apache.zookeeper.KeeperException$ConnectionLossException:
KeeperErrorCode = ConnectionLoss for
/_hadoopBsp/job_201404031649_0001/_workerProgresses
at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1041)
at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1069)
at org.apache.giraph.zk.ZooKeeperExt.exists(ZooKeeperExt.java:360)
at
org.apache.giraph.job.JobProgressTracker$2.run(JobProgressTracker.java:87)
at java.lang.Thread.run(Thread.java:744)
14/04/03 17:01:29 INFO zookeeper.ClientCnxn: Opening socket connection to
server ghufran/127.0.1.1:22181. Will not attempt to authenticate using SASL
(unknown error)
14/04/03 17:01:29 WARN zookeeper.ClientCnxn: Session 0x145284966610002 for
server null, unexpected error, closing socket connection and attempting
reconnect
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
14/04/03 17:01:30 INFO zookeeper.ClientCnxn: Opening socket connection to
server ghufran/127.0.1.1:22181. Will not attempt to authenticate using SASL
(unknown error)
14/04/03 17:01:30 WARN zookeeper.ClientCnxn: Session 0x145284966610002 for
server null, unexpected error, closing socket connection and attempting
reconnect
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
14/04/03 17:01:31 INFO zookeeper.ClientCnxn: Opening socket connection to
server ghufran/127.0.1.1:22181. Will not attempt to authenticate using SASL
(unknown error)
14/04/03 17:01:31 WARN zookeeper.ClientCnxn: Session 0x145284966610002 for
server null, unexpected error, closing socket connection and attempting
reconnect
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739)
at
org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1068)
14/04/03 17:01:31 INFO mapred.JobClient: Job complete: job_201404031649_0001
14/04/03 17:01:31 INFO mapred.JobClient: Counters: 6
14/04/03 17:01:31 INFO mapred.JobClient:   Job Counters
14/04/03 17:01:31 INFO mapred.JobClient:     SLOTS_MILLIS_MAPS=1235189
14/04/03 17:01:31 INFO mapred.JobClient:     Total time spent by all
reduces waiting after reserving slots (ms)=0
14/04/03 17:01:31 INFO mapred.JobClient:     Total time spent by all maps
waiting after reserving slots (ms)=0
14/04/03 17:01:31 INFO mapred.JobClient:     Launched map tasks=2
14/04/03 17:01:31 INFO mapred.JobClient:     SLOTS_MILLIS_REDUCES=0
14/04/03 17:01:31 INFO mapred.JobClient:     Failed map tasks=1



On Thu, Apr 3, 2014 at 5:05 PM, ghufran malik <ghufran1malik@gmail.com>wrote:

> My Giraph job gets stuck at this point and will not go any further, that
> log is what is continually printed out every 5 seconds. This log is coming
> from the CombinedWorkerProgress class:
>
>  else if (isComputeSuperstep()) {
>       sb.append("Compute superstep ").append(currentSuperstep).append(":
> ");
>       sb.append(verticesComputed).append(" out of ").append(
>           verticesToCompute).append(" vertices computed; ");
>       sb.append(partitionsComputed).append(" out of ").append(
>           partitionsToCompute).append(" partitions computed");
>
> So the data is loaded in fine and then the Giraph job gets stuck in
> superstep 0 for some reason?
>
> public void compute(Vertex<IntWritable, IntWritable, NullWritable> vertex,
> Iterable<IntWritable> messages) throws IOException
> {
>  //check if its the first superstep
>  if (getSuperstep() == 0)
>  {
>
>  if(isStart(vertex))
>  {
>  vertex.setValue(new IntWritable((int) getSuperstep()));
>   for (Edge<IntWritable, NullWritable> edge : vertex.getEdges())
>  {
>  idQueue.addInt(edge.getTargetVertexId().get());
>  sendMessage(edge.getTargetVertexId(), new IntWritable(1));
>  }
> Collections.sort(idQueue.getArrayList());
> aggregate(ID_AGG, idQueue);
>  }
>  else
>  {
>  vertex.setValue(new IntWritable(Integer.MAX_VALUE));
>  }
>  }
>
> Thats the code I wrote for the first superstep. I ran this code before
> without the aggregate and it worked, so I think my problem is related the
> the aggregator/master.
>
> Kind regards,
>
> Ghufran
>
>
> On Thu, Apr 3, 2014 at 4:40 PM, Rob Vesse <rvesse@dotnetrdf.org> wrote:
>
>> How is that an error?
>>
>> That's just some informational log statements from Giraph, you'll need to
>> provide the actual error message/describe the issue to get help with your
>> problem
>>
>> Rob
>>
>> From: ghufran malik <ghufran1malik@gmail.com>
>> Reply-To: <user@giraph.apache.org>
>> Date: Thursday, 3 April 2014 16:09
>> To: <user@giraph.apache.org>
>> Subject: Master/Agreggators
>>
>> Hi,
>>
>> I received the error:
>>
>> 14/04/03 16:01:07 INFO mapred.JobClient:  map 100% reduce 0%
>> 14/04/03 16:01:11 INFO job.JobProgressTracker: Data from 1 workers -
>> Compute superstep 0: 0 out of 4 vertices computed; 0 out of 1 partitions
>> computed; min free memory on worker 1 - 106.6MB, average 106.6MB
>> 14/04/03 16:01:16 INFO job.JobProgressTracker: Data from 1 workers -
>> Compute superstep 0: 0 out of 4 vertices computed; 0 out of 1 partitions
>> computed; min free memory on worker 1 - 106.6MB, average 106.6MB
>> 14/04/03 16:01:21 INFO job.JobProgressTracker: Data from 1 workers -
>> Compute superstep 0: 0 out of 4 vertices computed; 0 out of 1 partitions
>> computed; min free memory on worker 1 - 106.6MB, average 106.6MB
>> 14/04/03 16:01:26 INFO job.JobProgressTracker: Data from 1 workers -
>> Compute superstep 0: 0 out of 4 vertices computed; 0 out of 1 partitions
>> computed; min free memory on worker 1 - 106.59MB, average 106.59MB
>>
>>
>> After trying to run a computation class I made that makes use of an
>> agreggator and master. I remember getting a similar error when I tried
>> SimplePageRank which also makes uses of a master and a agreggator.
>>
>> Does anyone know why I receive this error and how to fix it?
>>
>> Kind regards,
>>
>> Ghufran
>>
>>
>

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