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From Jian Fang <jian.fang.subscr...@gmail.com>
Subject Re: java.io.IOException: Could not get input splits
Date Thu, 01 Sep 2011 16:10:36 GMT
Thanks. How soon 0.8.5 will be out? Is there any 0.8.5 snapshot version
available?

On Thu, Sep 1, 2011 at 11:57 AM, Jonathan Ellis <jbellis@gmail.com> wrote:

> Sounds like https://issues.apache.org/jira/browse/CASSANDRA-3044,
> fixed for 0.8.5
>
> On Thu, Sep 1, 2011 at 10:54 AM, Jian Fang
> <jian.fang.subscribe@gmail.com> wrote:
> > Hi,
> >
> > I upgraded Cassandra from 0.8.2 to 0.8.4 and run a hadoop job to read
> data
> > from Cassandra, but
> > got the following errors:
> >
> > 11/09/01 11:42:46 INFO hadoop.SalesRankLoader: Start Cassandra reader...
> > Exception in thread "main" java.io.IOException: Could not get input
> splits
> >     at
> >
> org.apache.cassandra.hadoop.ColumnFamilyInputFormat.getSplits(ColumnFamilyInputFormat.java:157)
> >     at
> org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:885)
> >     at
> > org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:779)
> >     at org.apache.hadoop.mapreduce.Job.submit(Job.java:432)
> >     at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:447)
> >     at
> > com.barnesandnoble.hadoop.SalesRankLoader.run(SalesRankLoader.java:359)
> >     at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
> >     at
> > com.barnesandnoble.hadoop.SalesRankLoader.main(SalesRankLoader.java:408)
> >     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> >     at
> >
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> >     at
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >     at java.lang.reflect.Method.invoke(Method.java:597)
> >     at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
> > Caused by: java.util.concurrent.ExecutionException:
> > java.lang.IllegalArgumentException: protocol = socket host = null
> >     at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
> >     at java.util.concurrent.FutureTask.get(FutureTask.java:83)
> >     at
> >
> org.apache.cassandra.hadoop.ColumnFamilyInputFormat.getSplits(ColumnFamilyInputFormat.java:153)
> >     ... 12 more
> > Caused by: java.lang.IllegalArgumentException: protocol = socket host =
> null
> >     at
> > sun.net.spi.DefaultProxySelector.select(DefaultProxySelector.java:151)
> >     at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:358)
> >     at java.net.Socket.connect(Socket.java:529)
> >     at org.apache.thrift.transport.TSocket.open(TSocket.java:178)
> >     at
> >
> org.apache.thrift.transport.TFramedTransport.open(TFramedTransport.java:81)
> >     at
> >
> org.apache.cassandra.hadoop.ColumnFamilyInputFormat.createConnection(ColumnFamilyInputFormat.java:243)
> >     at
> >
> org.apache.cassandra.hadoop.ColumnFamilyInputFormat.getSubSplits(ColumnFamilyInputFormat.java:217)
> >     at
> >
> org.apache.cassandra.hadoop.ColumnFamilyInputFormat.access$200(ColumnFamilyInputFormat.java:70)
> >     at
> >
> org.apache.cassandra.hadoop.ColumnFamilyInputFormat$SplitCallable.call(ColumnFamilyInputFormat.java:190)
> >     at
> >
> org.apache.cassandra.hadoop.ColumnFamilyInputFormat$SplitCallable.call(ColumnFamilyInputFormat.java:175)
> >     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> >     at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> >     at
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> >     at
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> >     at java.lang.Thread.run(Thread.java:662)
> >
> > The code used to work for 0.8.2 and it is really strange to see the host
> =
> > null. My code is very similar to the word count example,
> >
> >         logger.info("Start Cassandra reader...");
> >         Job job2 = new Job(getConf(), "SalesRankCassandraReader");
> >         job2.setJarByClass(SalesRankLoader.class);
> >         job2.setMapperClass(CassandraReaderMapper.class);
> >         job2.setReducerClass(CassandraToFilesystem.class);
> >         job2.setOutputKeyClass(Text.class);
> >         job2.setOutputValueClass(IntWritable.class);
> >         job2.setMapOutputKeyClass(Text.class);
> >         job2.setMapOutputValueClass(IntWritable.class);
> >         FileOutputFormat.setOutputPath(job2, new Path(outPath));
> >
> >         job2.setInputFormatClass(ColumnFamilyInputFormat.class);
> >
> >         ConfigHelper.setRpcPort(job2.getConfiguration(), "9260");
> >         ConfigHelper.setInitialAddress(job2.getConfiguration(),
> > "dnjsrcha02");
> >         ConfigHelper.setPartitioner(job2.getConfiguration(),
> > "org.apache.cassandra.dht.RandomPartitioner");
> >         ConfigHelper.setInputColumnFamily(job2.getConfiguration(),
> KEYSPACE,
> > columnFamily);
> > //        ConfigHelper.setInputSplitSize(job2.getConfiguration(), 5000);
> >         ConfigHelper.setRangeBatchSize(job2.getConfiguration(),
> batchSize);
> >         SlicePredicate predicate = new
> >
> SlicePredicate().setColumn_names(Arrays.asList(ByteBufferUtil.bytes(columnName)));
> >         ConfigHelper.setInputSlicePredicate(job2.getConfiguration(),
> > predicate);
> >
> >         job2.waitForCompletion(true);
> >
> > The Cassandra cluster includes 6 nodes and I am pretty sure they work
> fine.
> >
> > Please help.
> >
> > Thanks,
> >
> > John
> >
> >
> >
>
>
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of DataStax, the source for professional Cassandra support
> http://www.datastax.com
>

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