Hey All,

We are using the 0.8.1 kafka operator and the ZK connection string has a chroot 
on it. We get errors when launching and the app fails, is there a proper way in 
apex to append a chroot?


*the ip’s are masked with #, but that’s not how they appear in our code 
obviously*

When we add this to the property for ZK:


<property>
       <name>dt.operator.kafkaInputOperator.prop.consumer.zookeeper</name>
       
<value>10.##.##.#:2181,10.##.##.##:2181,10.##.##.##:2181,10.##.##.#:2181/kafka2</value>
</property>



We get this error (connecting to a cluster without chroot it works fine):


2016-08-24 11:55:13,448 [main-EventThread] INFO  zkclient.ZkClient 
processStateChanged - zookeeper state changed (SyncConnected)
2016-08-24 11:55:13,585 
[ZkClient-EventThread-30-10.##.##.#:2181,10.##.##.##:2181,10.##.##.#:2181/kafka2,10.##.##.##:2181]
 INFO  zkclient.ZkEventThread run - Terminate ZkClient event thread.
2016-08-24 11:55:13,596 [main] INFO  zookeeper.ZooKeeper close - Session: 
0x4558654aacf4263 closed
2016-08-24 11:55:13,596 [main-EventThread] INFO  zookeeper.ClientCnxn run - 
EventThread shut down
2016-08-24 11:55:13,597 [main] INFO  kafka.AbstractKafkaInputOperator 
definePartitions - [ONE_TO_ONE]: Initializing partition(s)
2016-08-24 11:55:13,602 [main] INFO  service.AbstractService noteFailure - 
Service com.datatorrent.stram.StreamingAppMasterService failed in state INITED; 
cause: java.lang.IllegalArgumentException: there has to be one idempotent 
storage manager
java.lang.IllegalArgumentException: there has to be one idempotent storage 
manager
    at com.google.common.base.Preconditions.checkArgument(Preconditions.java:93)
    at 
org.apache.apex.malhar.lib.wal.FSWindowDataManager.partitioned(FSWindowDataManager.java:251)
    at 
com.datatorrent.contrib.kafka.AbstractKafkaInputOperator.definePartitions(AbstractKafkaInputOperator.java:637)
    at 
com.datatorrent.stram.plan.physical.PhysicalPlan.initPartitioning(PhysicalPlan.java:752)
    at 
com.datatorrent.stram.plan.physical.PhysicalPlan.addLogicalOperator(PhysicalPlan.java:1676)
    at 
com.datatorrent.stram.plan.physical.PhysicalPlan.<init>(PhysicalPlan.java:378)
    at 
com.datatorrent.stram.StreamingContainerManager.<init>(StreamingContainerManager.java:418)
    at 
com.datatorrent.stram.StreamingContainerManager.getInstance(StreamingContainerManager.java:3023)
    at 
com.datatorrent.stram.StreamingAppMasterService.serviceInit(StreamingAppMasterService.java:551)
    at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
    at 
com.datatorrent.stram.StreamingAppMaster.main(StreamingAppMaster.java:102)
2016-08-24 11:55:13,604 [main] WARN  service.AbstractService stopQuietly - When 
stopping the service com.datatorrent.stram.StreamingAppMasterService : 
java.lang.NullPointerException
java.lang.NullPointerException
    at 
com.datatorrent.stram.StreamingAppMasterService.serviceStop(StreamingAppMasterService.java:629)
    at org.apache.hadoop.service.AbstractService.stop(AbstractService.java:221)
    at 
org.apache.hadoop.service.ServiceOperations.stop(ServiceOperations.java:52)
    at 
org.apache.hadoop.service.ServiceOperations.stopQuietly(ServiceOperations.java:80)
    at org.apache.hadoop.service.AbstractService.init(AbstractService.java:171)
    at 
com.datatorrent.stram.StreamingAppMaster.main(StreamingAppMaster.java:102)
2016-08-24 11:55:13,605 [main] ERROR stram.StreamingAppMaster main - Exiting 
Application Master
java.lang.IllegalArgumentException: there has to be one idempotent storage 
manager
    at com.google.common.base.Preconditions.checkArgument(Preconditions.java:93)
    at 
org.apache.apex.malhar.lib.wal.FSWindowDataManager.partitioned(FSWindowDataManager.java:251)
    at 
com.datatorrent.contrib.kafka.AbstractKafkaInputOperator.definePartitions(AbstractKafkaInputOperator.java:637)
    at 
com.datatorrent.stram.plan.physical.PhysicalPlan.initPartitioning(PhysicalPlan.java:752)
    at 
com.datatorrent.stram.plan.physical.PhysicalPlan.addLogicalOperator(PhysicalPlan.java:1676)
    at 
com.datatorrent.stram.plan.physical.PhysicalPlan.<init>(PhysicalPlan.java:378)
    at 
com.datatorrent.stram.StreamingContainerManager.<init>(StreamingContainerManager.java:418)
    at 
com.datatorrent.stram.StreamingContainerManager.getInstance(StreamingContainerManager.java:3023)
    at 
com.datatorrent.stram.StreamingAppMasterService.serviceInit(StreamingAppMasterService.java:551)
    at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
    at 
com.datatorrent.stram.StreamingAppMaster.main(StreamingAppMaster.java:102)
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