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https://issues.apache.org/jira/browse/YARN-5014?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15263696#comment-15263696
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Vrushali C commented on YARN-5014:
----------------------------------
Now I can insert and scan for non numeric values in flow run table
{code}
hbase(main):030:0> scan 'timelineservice.flowrun'
ROW COLUMN+CELL
row2 column=f3:another_key,
timestamp=1461913999681, value=value_1001
row4 column=f3:key66, timestamp=1461912421472,
value=value00
2 row(s) in 0.0200 seconds
{code}
The code changes in FlowScanner.java are available as part of the patch I just
uploaded to YARN-4986
> Ensure non-metric values are returned as is for flow run table from the
> coprocessor
> -----------------------------------------------------------------------------------
>
> Key: YARN-5014
> URL: https://issues.apache.org/jira/browse/YARN-5014
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineserver
> Reporter: Vrushali C
> Assignee: Vrushali C
>
> Presently the FlowScanner class presumes existence of NumericValueConverter
> in it's emitCells function. This causes an exception when we try to retrieve
> non-numeric values from this table.
> Exception is seen as:
> {code}
> java.lang.ClassCastException:
> org.apache.hadoop.yarn.server.timelineservice.storage.common.GenericConverter
> cannot be cast to
> org.apache.hadoop.yarn.server.timelineservice.storage.common.NumericValueConverter
> at
> org.apache.hadoop.yarn.server.timelineservice.storage.flow.FlowScanner.nextInternal(FlowScanner.java:246)
> at
> org.apache.hadoop.yarn.server.timelineservice.storage.flow.FlowScanner.nextRaw(FlowScanner.java:125)
> at
> org.apache.hadoop.yarn.server.timelineservice.storage.flow.FlowScanner.nextRaw(FlowScanner.java:119)
> at
> org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:2117)
> at
> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:31443)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2031)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:107)
> at
> org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:130)
> at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:107)
> {code}
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