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From Cyril Scetbon <cyril.scet...@free.fr>
Subject Re: Hadoop + Yarn / DataStax driver issues
Date Tue, 24 Nov 2015 00:00:20 GMT
Let me also add that I use Cassandra 2.1.11 with Hadoop 2.7.1 (HDP 2.3.2).

> Trying to execute an Hadoop job on Yarn, I got errors from Cassandra's internal code.
It seems that connections are closed but I can't understand why ...
> 
> Here is a subtract of the errors :
> 
> 15/11/22 20:05:54 [main]: DEBUG core.RequestHandler: Error querying node006.internal.net/192.168.12.22:9042,
trying next host (error is: com.datastax.driver.core.ConnectionException: [node006.internal.net/192.168.12.22:9042]
Pool is shutdown)
> Failed with exception java.io.IOException:java.io.IOException: com.datastax.driver.core.exceptions.NoHostAvailableException:
All host(s) tried 
> for
> query failed (tried: node006.internal.net/192.168.12.22:9042 (com.datastax.driver.core.ConnectionException:
[node006.internal.net/192.168.12.22:9042] Pool is shutdown))
> 15/11/22 20:05:54 [main]: ERROR CliDriver: Failed with exception java.io.IOException:java.io.IOException:
com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried 
> for
> query failed (tried: node006.internal.net/192.168.12.22:9042 (com.datastax.driver.core.ConnectionException:
[node006.internal.net/192.168.12.22:9042] Pool is shutdown))
> java.io.IOException: java.io.IOException: com.datastax.driver.core.exceptions.NoHostAvailableException:
All host(s) tried 
> for
> query failed (tried: node006.internal.net/192.168.12.22:9042 (com.datastax.driver.core.ConnectionException:
[node006.internal.net/192.168.12.22:9042] Pool is shutdown))
> 	at org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:508)
> 	at org.apache.hadoop.hive.ql.exec.FetchOperator.pushRow(FetchOperator.java:415)
> 	at org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:140)
> 	at org.apache.hadoop.hive.ql.Driver.getResults(Driver.java:1672)
> 	at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:233)
> 	at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:165)
> 	at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:376)
> 	at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:736)
> 	at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:681)
> 	at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:621)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:497)
> 	at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
> 	at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
> Caused by: java.io.IOException: com.datastax.driver.core.exceptions.NoHostAvailableException:
All host(s) tried 
> for
> query failed (tried: node006.internal.net/192.168.12.22:9042 (com.datastax.driver.core.ConnectionException:
[node006.internal.net/192.168.12.22:9042] Pool is shutdown))
> 	at org.apache.hadoop.hive.cassandra.input.cql.HiveCqlInputFormat.getRecordReader(HiveCqlInputFormat.java:132)
> 	at org.apache.hadoop.hive.ql.exec.FetchOperator$FetchInputFormatSplit.getRecordReader(FetchOperator.java:674)
> 	at org.apache.hadoop.hive.ql.exec.FetchOperator.getRecordReader(FetchOperator.java:324)
> 	at org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:446)
> 	... 15 more
> Caused by: com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s)
tried 
> for
> query failed (tried: node006.internal.net/192.168.12.22:9042 (com.datastax.driver.core.ConnectionException:
[node006.internal.net/192.168.12.22:9042] Pool is shutdown))
> 	at com.datastax.driver.core.exceptions.NoHostAvailableException.copy(NoHostAvailableException.java:84)
> 	at com.datastax.driver.core.DriverThrowables.propagateCause(DriverThrowables.java:37)
> 	at com.datastax.driver.core.DefaultResultSetFuture.getUninterruptibly(DefaultResultSetFuture.java:214)
> 	at com.datastax.driver.core.AbstractSession.execute(AbstractSession.java:52)
> 	at com.datastax.driver.core.AbstractSession.execute(AbstractSession.java:36)
> 	at org.apache.cassandra.hadoop.cql3.CqlRecordReader.fetchKeys(CqlRecordReader.java:578)
> 	at org.apache.cassandra.hadoop.cql3.CqlRecordReader.buildQuery(CqlRecordReader.java:526)
> 	at org.apache.cassandra.hadoop.cql3.CqlRecordReader.initialize(CqlRecordReader.java:148)
I also add a file with the complete debug logs.
> 
> You can also find the complete log at https://www.dropbox.com/s/thwugpw8amv5x9q/output.log?dl=0


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