Indexing task not ending and unable to shutdown using HTTP endpoint

I have a few realtime indexing task submitted by tranquility which are not ending. Also I am unable to shut them down using HTTP endpoint to overlord. I am running druid 0.9.0.

The only error I got in the task log was

2016-04-30T00:00:06,046 INFO [main-SendThread(c8-data-store-3.srv.media.net:2181)] org.apache.zookeeper.ClientCnxn - Opening socket connection to server c8-data-store-3.srv.media.net/172.16.200.126:2181. Will not attempt to authenticate using SASL (unknown error)

2016-04-30T00:28:47,096 ERROR [DATABASE_NAME-incremental-persist] io.druid.segment.realtime.plumber.RealtimePlumber - dataSource[DATABASE_NAME] – incremental persist failed: {class=io.druid.segment.realtime.plumber.RealtimePlumber, interval=2016-04-30T00:00:00.000Z/2016-04-30T01:00:00.000Z, count=7}

2016-04-30T00:33:47,065 ERROR [DATABASE_NAME-incremental-persist] io.druid.segment.realtime.plumber.RealtimePlumber - dataSource[DATABASE_NAME] – incremental persist failed: {class=io.druid.segment.realtime.plumber.RealtimePlumber, interval=2016-04-30T00:00:00.000Z/2016-04-30T01:00:00.000Z, count=8}

2016-04-30T00:38:47,157 ERROR [DATABASE_NAME-incremental-persist] io.druid.segment.realtime.plumber.RealtimePlumber - dataSource[DATABASE_NAME] – incremental persist failed: {class=io.druid.segment.realtime.plumber.RealtimePlumber, interval=2016-04-30T00:00:00.000Z/2016-04-30T01:00:00.000Z, count=9}

2016-04-30T00:43:47,189 ERROR [DATABASE_NAME-incremental-persist] io.druid.segment.realtime.plumber.RealtimePlumber - dataSource[DATABASE_NAME] – incremental persist failed: {class=io.druid.segment.realtime.plumber.RealtimePlumber, interval=2016-04-30T00:00:00.000Z/2016-04-30T01:00:00.000Z, count=10}

2016-04-30T00:48:47,202 ERROR [DATABASE_NAME-incremental-persist] io.druid.segment.realtime.plumber.RealtimePlumber - dataSource[DATABASE_NAME] – incremental persist failed: {class=io.druid.segment.realtime.plumber.RealtimePlumber, interval=2016-04-30T00:00:00.000Z/2016-04-30T01:00:00.000Z, count=11}

2016-04-30T00:53:47,301 ERROR [DATABASE_NAME-incremental-persist] io.druid.segment.realtime.plumber.RealtimePlumber - dataSource[DATABASE_NAME] – incremental persist failed: {class=io.druid.segment.realtime.plumber.RealtimePlumber, interval=2016-04-30T00:00:00.000Z/2016-04-30T01:00:00.000Z, count=12}

2016-04-30T00:58:47,174 ERROR [DATABASE_NAME-incremental-persist] io.druid.segment.realtime.plumber.RealtimePlumber - dataSource[DATABASE_NAME] – incremental persist failed: {class=io.druid.segment.realtime.plumber.RealtimePlumber, interval=2016-04-30T00:00:00.000Z/2016-04-30T01:00:00.000Z, count=13}

2016-04-30T01:03:52,408 ERROR [DATABASE_NAME-incremental-persist] io.druid.segment.realtime.plumber.RealtimePlumber - dataSource[DATABASE_NAME] – incremental persist failed: {class=io.druid.segment.realtime.plumber.RealtimePlumber, interval=2016-04-30T00:00:00.000Z/2016-04-30T01:00:00.000Z, count=14}

2016-04-30T01:15:00,176 ERROR [DATABASE_NAME-incremental-persist] io.druid.segment.realtime.plumber.RealtimePlumber - dataSource[DATABASE_NAME] – incremental persist failed: {class=io.druid.segment.realtime.plumber.RealtimePlumber, interval=2016-04-30T00:00:00.000Z/2016-04-30T01:00:00.000Z, count=15}

The complete task log is attached. How do I shut down this task without having to shutdown middleManager (as that would cause me to lose other tasks)?

log (506 KB)

The complete error:
2016-04-30T00:33:47,065 ERROR [DATABASE_NAME-incremental-persist] io.druid.segment.realtime.plumber.RealtimePlumber - dataSource[Prebid_Provider_Request] – incremental persist failed: {class=io.druid.segment.realtime.plumber.RealtimePlumber, interval=2016-04-30T00:00:00.000Z/2016-04-30T01:00:00.000Z, count=8}

Exception in thread “plumber_persist_1” com.metamx.common.ISE: unknown event type [class com.metamx.emitter.service.AlertEvent]

at io.druid.emitter.graphite.GraphiteEmitter.emit(GraphiteEmitter.java:127)

at com.metamx.emitter.service.ServiceEmitter.emit(ServiceEmitter.java:57)

at com.metamx.emitter.service.ServiceEmitter.emit(ServiceEmitter.java:62)

at com.metamx.emitter.service.AlertBuilder.emit(AlertBuilder.java:82)

at com.metamx.emitter.EmittingLogger$EmittingAlertBuilder.emit(EmittingLogger.java:108)

at io.druid.segment.realtime.plumber.RealtimePlumber.persistHydrant(RealtimePlumber.java:1047)

at io.druid.segment.realtime.plumber.RealtimePlumber$3.doRun(RealtimePlumber.java:445)

at io.druid.common.guava.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:42)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

at java.lang.Thread.run(Thread.java:745)

208

Hi Rishi, can you please remove the graphite emitter from your deployment? The graphite emitter is a community module and we do not support it officially.