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https://issues.apache.org/jira/browse/CASSANDRA-3220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13106758#comment-13106758
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Jackson Chung commented on CASSANDRA-3220:
------------------------------------------
hm, i was running into issue reported in #3044 and #2388
{noformat}
2011-09-14 22:58:44,004 ERROR CliDriver (SessionState.java:printError(343)) -
Failed with exception java.io.IOException:java.io.IOException: Could not get
input splits
java.io.IOException: java.io.IOException: Could not get input splits
at
org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:341)
at org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:133)
at org.apache.hadoop.hive.ql.Driver.getResults(Driver.java:1114)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:187)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:241)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:456)
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.io.IOException: Could not get input splits
at
org.apache.cassandra.hadoop.ColumnFamilyInputFormat.getSplits(ColumnFamilyInputFormat.java:157)
at
org.apache.hadoop.hive.cassandra.input.HiveCassandraStandardColumnInputFormat.getSplits(HiveCassandraStandardColumnInputFormat.java:326)
at
org.apache.hadoop.hive.ql.exec.FetchOperator.getRecordReader(FetchOperator.java:281)
at
org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:320)
... 10 more
Caused by: java.util.concurrent.ExecutionException: java.io.IOException: failed
connecting to all endpoints
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)
... 13 more
Caused by: java.io.IOException: failed connecting to all endpoints
at
org.apache.cassandra.hadoop.ColumnFamilyInputFormat.getSubSplits(ColumnFamilyInputFormat.java:234)
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)
{noformat}
The "failed connecting to all endpoints" was actually supposedly printing the
endpoints:
throw new IOException("failed connecting to all endpoints " +
StringUtils.join(range.endpoints, ","));
Since the stacktrace doesn't print anything after the endpoints, that's when i
learned that my range.endpoints are null, and hence prompted me to find out
what my range is.
The reason i choose to do it in the cli as I was thinking on the how the code
internally has been getting it and see mostly using the thrift API. I could see
if that could be done in nodetool, but could you explain why it is better?
> add describe_ring to cli
> ------------------------
>
> Key: CASSANDRA-3220
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3220
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Jackson Chung
> Priority: Minor
> Attachments: patch3220.diff
>
>
> Lately I have found the describe_ring feature was needed to debug/analyze
> issue, but the cli does not have this available.
> So just in case it is useful, please see the attached patch.
> here is the sample output:
> {noformat}
> [default@unknown] help;
> ...
> ...
> decr Decrements a counter column.
> describe ring Describe the token range information.
> describe cluster Describe the cluster configuration.
> ...
> ...
> [default@unknown] help describe ring;
> describe ring <keyspace>;
> Describes the token range settings for the named keyspace.
> Required Parameters:
> - keyspace: Name of the keyspace to describe the token range.
> Examples:
> describe ring <keyspace>; - Describes the token range settings for the named
> keyspace.
> [default@unknown] describe ring Keyspace3;
> TokenRange:
> TokenRange(start_token:9739248273232290250409572410247679660,
> end_token:9739248273232290250409572410247679660, endpoints:[192.168.0.125],
> rpc_endpoints:[192.168.0.125],
> endpoint_details:[EndpointDetails(host:192.168.0.125, port:9160,
> datacenter:168)])
> [default@unknown] describe ring fooks;
> Keyspace with name 'fooks' wasn't found, , please, authorize to one of the
> keyspaces first.
> [default@unknown] describe ring;
> Syntax error at position 13: mismatched input ';' expecting set null
> {noformat}
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