[jira] [Created] (LIVY-547) Livy kills session after livy.server.session.timeout even if the session is active

["Sandeep Nemuri (JIRA)" <ji...@apache.org>]

Sandeep Nemuri created LIVY-547:
-----------------------------------

             Summary: Livy kills session after livy.server.session.timeout even if the session is active
                 Key: LIVY-547
                 URL: https://issues.apache.org/jira/browse/LIVY-547
             Project: Livy
          Issue Type: Bug
          Components: Server
            Reporter: Sandeep Nemuri


Livy kills session after {{livy.server.session.timeout}} even if the session is active.

Code that runs more than the {{livy.server.session.timeout}} with intermediate sleeps.
{noformat}
%pyspark 
import time 
import datetime 
import random
def inside(p):
    x, y = random.random(), random.random()
    return x*x + y*y < 1
NUM_SAMPLES=10
count = sc.parallelize(xrange(0, NUM_SAMPLES)) \
             .filter(inside).count()
print "Pi is roughly %f" % (4.0 * count / NUM_SAMPLES)

print("waiting for 100 s") 
time.sleep(100) 
count = sc.parallelize(xrange(0, NUM_SAMPLES)) \
             .filter(inside).count()
print "Pi is roughly %f" % (4.0 * count / NUM_SAMPLES)

print("waiting for 200 s") 
time.sleep(200) 
count = sc.parallelize(xrange(0, NUM_SAMPLES)) \
             .filter(inside).count()
print "Pi is roughly %f" % (4.0 * count / NUM_SAMPLES)

print("waiting for 300 s1") 
time.sleep(300)
count = sc.parallelize(xrange(0, NUM_SAMPLES)) \
             .filter(inside).count()
print "Pi is roughly %f" % (4.0 * count / NUM_SAMPLES)

print("waiting for 300 s2") 
time.sleep(300) 
count = sc.parallelize(xrange(0, NUM_SAMPLES)) \
             .filter(inside).count()
print "Pi is roughly %f" % (4.0 * count / NUM_SAMPLES)

print("waiting for 300 s3") 
time.sleep(300) 
count = sc.parallelize(xrange(0, NUM_SAMPLES)) \
             .filter(inside).count()
print "Pi is roughly %f" % (4.0 * count / NUM_SAMPLES)

print("waiting for 300 s4") 
time.sleep(300) 
count = sc.parallelize(xrange(0, NUM_SAMPLES)) \
             .filter(inside).count()
print "Pi is roughly %f" % (4.0 * count / NUM_SAMPLES)
{noformat}
Livy log:
{noformat}
19/01/07 17:38:59 INFO InteractiveSession: Interactive session 14 created [appid: application_1546711709239_0002, owner: zeppelin-hwc327, proxyUser: Some(admin), state: idle, kind: shared, info: {driverLogUrl=http://hwc327-node3.hogwarts-labs.com:8042/node/containerlogs/container_e18_1546711709239_0002_01_000001/admin, sparkUiUrl=http://hwc327-node2.hogwarts-labs.com:8088/proxy/application_1546711709239_0002/}]
19/01/07 17:52:46 INFO InteractiveSession: Stopping InteractiveSession 14...
19/01/07 17:52:56 WARN RSCClient: Exception while waiting for end session reply.
java.util.concurrent.TimeoutException
        at io.netty.util.concurrent.AbstractFuture.get(AbstractFuture.java:49)
        at org.apache.livy.rsc.RSCClient.stop(RSCClient.java:223)
        at org.apache.livy.server.interactive.InteractiveSession$$anonfun$stopSession$1.apply(InteractiveSession.scala:471)
        at org.apache.livy.server.interactive.InteractiveSession$$anonfun$stopSession$1.apply(InteractiveSession.scala:471)
        at scala.Option.foreach(Option.scala:236)
        at org.apache.livy.server.interactive.InteractiveSession.stopSession(InteractiveSession.scala:471)
        at org.apache.livy.sessions.Session$$anonfun$stop$1.apply$mcV$sp(Session.scala:174)
        at org.apache.livy.sessions.Session$$anonfun$stop$1.apply(Session.scala:171)
        at org.apache.livy.sessions.Session$$anonfun$stop$1.apply(Session.scala:171)
        at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)
        at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)
        at scala.concurrent.impl.ExecutionContextImpl$$anon$3.exec(ExecutionContextImpl.scala:107)
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
        at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
        at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
        at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
19/01/07 17:52:56 WARN RpcDispatcher: [ClientProtocol] Closing RPC channel with 1 outstanding RPCs.
19/01/07 17:52:56 WARN InteractiveSession: Failed to stop RSCDriver. Killing it...
19/01/07 17:52:56 INFO YarnClientImpl: Killed application application_1546711709239_0002
19/01/07 17:52:56 INFO InteractiveSession: Stopped InteractiveSession 14.

{noformat}

 Below note indicates that the timeout applies to a inactive session.
{code:java|title=LivyConf.scala}
  // How long will an inactive session be gc-ed.
  val SESSION_TIMEOUT = Entry("livy.server.session.timeout", "1h")
{code}



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