[YARN-5014] Ensure non-metric values are returned as is for flow run table from the coprocessor

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.9.0, 3.0.0-alpha1
• Component/s: timelineserver
• Labels: yarn-2928-1st-milestone
• Assignee: Vrushali C
• Reporter: Vrushali C
• Created: 29/Apr/16 07:33
• Updated: 21/Oct/17 06:05
• Resolved: 30/Apr/16 06:00

Description

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:

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)

Issue Links

• is related to: YARN-4986 Add a check in the coprocessor for table to operated on