Zookeeper connection loss? Ingestion failing

Hello,

Ingestion tasks are failing and I see this error on coordinator logs. How do we resolve this and would this probably be the root cause of it ?

druid[51599]: 2018-11-03T04:03:11,417 ERROR [Curator-Framework-0] org.apache.curator.ConnectionState - Connection timed out for connection string (localhost:2181) and timeout (15000) / elapsed (20004)

druid[51599]: org.apache.curator.CuratorConnectionLossException: KeeperErrorCode = ConnectionLoss

druid[51599]: at org.apache.curator.ConnectionState.checkTimeouts(ConnectionState.java:197) [curator-client-2.11.0.jar:?]

druid[51599]: at org.apache.curator.ConnectionState.getZooKeeper(ConnectionState.java:88) [curator-client-2.11.0.jar:?]

druid[51599]: at org.apache.curator.CuratorZookeeperClient.getZooKeeper(CuratorZookeeperClient.java:116) [curator-client-2.11.0.jar:?]

druid[51599]: at org.apache.curator.framework.imps.CuratorFrameworkImpl.performBackgroundOperation(CuratorFrameworkImpl.java:835) [curator-framework-2.11.0.jar:?]

druid[51599]: at org.apache.curator.framework.imps.CuratorFrameworkImpl.backgroundOperationsLoop(CuratorFrameworkImpl.java:809) [curator-framework-2.11.0.jar:?]

druid[51599]: at org.apache.curator.framework.imps.CuratorFrameworkImpl.access$300(CuratorFrameworkImpl.java:64) [curator-framework-2.11.0.jar:?]

druid[51599]: at org.apache.curator.framework.imps.CuratorFrameworkImpl$4.call(CuratorFrameworkImpl.java:267) [curator-framework-2.11.0.jar:?]

druid[51599]: at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_144]

druid[51599]: at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_144]

druid[51599]: at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [?:1.8.0_144]

druid[51599]: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_144]

druid[51599]: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_144]

druid[51599]: at java.lang.Thread.run(Thread.java:748) [?:1.8.0_144]

Thanks!