No hosts are available for disco!druid:overlord, Dtab.base=[], Dtab.local=[]

[arun.s...@wipro.com]

I am using druid 0.11.0

while->

./bin/tranquility kafka -configFile /usr/local/share/druid-0.11.0/conf-quickstart/tranquility/kafka1.json

I am running druid on GCP
Linux xxxxxxxxxxxx 4.4.0-104-generic #127-Ubuntu SMP Mon Dec 11 12:16:42 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Logs:

Jan 18, 2018 4:04:37 AM com.twitter.finagle.Init$$anonfun$1 apply$mcV$sp
INFO: Finagle version 6.31.0 (rev=50d3bb0eea5ad3ed332111d707184c80fed6a506) built at 20151203-164135
2018-01-18 04:04:37,724 [ClusteredBeam-ZkFuturePool-283d64e5-7b79-4246-afc2-06c6cfe02968] INFO  c.m.c.s.net.finagle.DiscoResolver - Updating instances for service[druid:overlord] to Set()
2018-01-18 04:04:37,808 [ClusteredBeam-ZkFuturePool-283d64e5-7b79-4246-afc2-06c6cfe02968] INFO  c.m.t.finagle.FinagleRegistry - Created client for service: disco!druid:overlord
2018-01-18 04:04:37,888 [ClusteredBeam-ZkFuturePool-283d64e5-7b79-4246-afc2-06c6cfe02968] WARN  c.m.tranquility.finagle.FutureRetry$ - Transient error, will try again in 18,439 ms
com.twitter.finagle.NoBrokersAvailableException: No hosts are available for disco!druid:overlord, Dtab.base=[], Dtab.local=[]
        at com.twitter.finagle.NoStacktrace(Unknown Source) ~[na:na]
2018-01-18 04:04:56,336 [Hashed wheel timer #1] WARN  c.m.tranquility.finagle.FutureRetry$ - Transient error, will try again in 28,793 ms
com.twitter.finagle.NoBrokersAvailableException: No hosts are available for disco!druid:overlord, Dtab.base=[], Dtab.local=[]
        at com.twitter.finagle.NoStacktrace(Unknown Source) ~[na:na]
2018-01-18 04:05:25,138 [Hashed wheel timer #1] WARN  c.m.tranquility.finagle.FutureRetry$ - Transient error, will try again in 58,218 ms
com.twitter.finagle.NoBrokersAvailableException: No hosts are available for disco!druid:overlord, Dtab.base=[], Dtab.local=[]
        at com.twitter.finagle.NoStacktrace(Unknown Source) ~[na:na]
2018-01-18 04:06:23,364 [ClusteredBeam-ZkFuturePool-283d64e5-7b79-4246-afc2-06c6cfe02968] ERROR c.m.tranquility.beam.ClusteredBeam - Failed to update cluster state: druid:overlord/pageviews-kafka
com.twitter.finagle.NoBrokersAvailableException: No hosts are available for disco!druid:overlord, Dtab.base=[], Dtab.local=[]
        at com.twitter.finagle.NoStacktrace(Unknown Source) ~[na:na]
2018-01-18 04:06:23,374 [ClusteredBeam-ZkFuturePool-283d64e5-7b79-4246-afc2-06c6cfe02968] WARN  c.m.tranquility.beam.ClusteredBeam - Emitting alert: [anomaly] Failed to create merged beam: druid:overlord/pageviews-kafka
{ }
java.lang.IllegalStateException: Failed to save new beam for identifier[druid:overlord/pageviews-kafka] timestamp[2018-01-18T03:00:00.000Z]
        at com.metamx.tranquility.beam.ClusteredBeam$$anonfun$2.applyOrElse(ClusteredBeam.scala:289) ~[io.druid.tranquility-core-0.8.2.jar:0.8.2]
        at com.metamx.tranquility.beam.ClusteredBeam$$anonfun$2.applyOrElse(ClusteredBeam.scala:286) ~[io.druid.tranquility-core-0.8.2.jar:0.8.2]
        at com.twitter.util.Future$$anonfun$rescue$1.apply(Future.scala:924) ~[com.twitter.util-core_2.11-6.30.0.jar:6.30.0]
        at com.twitter.util.Future$$anonfun$rescue$1.apply(Future.scala:922) ~[com.twitter.util-core_2.11-6.30.0.jar:6.30.0]
        at com.twitter.util.Promise$Transformer.liftedTree1$1(Promise.scala:112) [com.twitter.util-core_2.11-6.30.0.jar:6.30.0]
        at com.twitter.util.Promise$Transformer.k(Promise.scala:112) [com.twitter.util-core_2.11-6.30.0.jar:6.30.0]
        at com.twitter.util.Promise$Transformer.apply(Promise.scala:122) [com.twitter.util-core_2.11-6.30.0.jar:6.30.0]
        at com.twitter.util.Promise$Transformer.apply(Promise.scala:103) [com.twitter.util-core_2.11-6.30.0.jar:6.30.0]
        at com.twitter.util.Promise$$anon$1.run(Promise.scala:366) [com.twitter.util-core_2.11-6.30.0.jar:6.30.0]
        at com.twitter.concurrent.LocalScheduler$Activation.run(Scheduler.scala:178) [com.twitter.util-core_2.11-6.30.0.jar:6.30.0]
        at com.twitter.concurrent.LocalScheduler$Activation.submit(Scheduler.scala:136) [com.twitter.util-core_2.11-6.30.0.jar:6.30.0]
        at com.twitter.concurrent.LocalScheduler.submit(Scheduler.scala:207) [com.twitter.util-core_2.11-6.30.0.jar:6.30.0]
        at com.twitter.concurrent.Scheduler$.submit(Scheduler.scala:92) [com.twitter.util-core_2.11-6.30.0.jar:6.30.0]
        at com.twitter.util.Promise.runq(Promise.scala:350) [com.twitter.util-core_2.11-6.30.0.jar:6.30.0]
        at com.twitter.util.Promise.updateIfEmpty(Promise.scala:721) [com.twitter.util-core_2.11-6.30.0.jar:6.30.0]
        at com.twitter.util.ExecutorServiceFuturePool$$anon$2.run(FuturePool.scala:107) [com.twitter.util-core_2.11-6.30.0.jar:6.30.0]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_151]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_151]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_151]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_151]
        at java.lang.Thread.run(Thread.java:748) [na:1.8.0_151]
Caused by: com.twitter.finagle.NoBrokersAvailableException: No hosts are available for disco!druid:overlord, Dtab.base=[], Dtab.local=[]
        at com.twitter.finagle.NoStacktrace(Unknown Source) ~[na:na]