Getting 2 exceptions from Tachyon

[Antonio Si]

Hi,

I am using tachyon 0.7.1 currently. I am getting 2 excpetions in my log file:

The first exception is:

Caused by: tachyon.org.apache.thrift.TApplicationException: Internal error processing cacheBlock
	at tachyon.org.apache.thrift.TApplicationException.read(TApplicationException.java:111)
	at tachyon.org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:71)
	at tachyon.thrift.WorkerService$Client.recv_cacheBlock(WorkerService.java:280)
	at tachyon.thrift.WorkerService$Client.cacheBlock(WorkerService.java:266)
	at tachyon.worker.WorkerClient.cacheBlock(WorkerClient.java:169)

and later, I got another exception which seems is related to heartbeat:

java.lang.NullPointerException
	at tachyon.util.NetworkUtils.getFqdnHost(NetworkUtils.java:205)
	at tachyon.worker.WorkerClient.connect(WorkerClient.java:250)
	at tachyon.worker.WorkerClient.mustConnect(WorkerClient.java:361)
	at tachyon.worker.WorkerClient.userHeartbeat(WorkerClient.java:458)
	at tachyon.worker.WorkerClientHeartbeatExecutor.heartbeat(WorkerClientHeartbeatExecutor.java:40)
	at tachyon.HeartbeatThread.run(HeartbeatThread.java:51)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)

May I ask what may be causing these exceptions?

Thanks.

Antonio.

[Gene Pang]

Hi Antonio,

For the first exception, could you take a look at the worker logs to see why it couldn't cache the block?

For the second exception, it looks like the client couldn't talk to the worker? Could you take a look at the worker logs?

I hope this helps,

Gene