Error Failed sending discovery

[ddgaikwad]

Hi Guys,

Our User App recently started reporting this error message repeatedly in
the server.log:
2016-05-03 23:55:55,745 WARN [org.jgroups.protocols.pbcast.NAKACK]
(Timer-4,10.10.62.82:34954) failure passing message down
java.lang.NullPointerException
at org.jgroups.protocols.TP.down(TP.java:1186)
at org.jgroups.protocols.TP$ProtocolAdapter.down(TP.java:2316)
at org.jgroups.protocols.Discovery.down(Discovery.java:374)
at org.jgroups.protocols.MERGE2.down(MERGE2.java:175)
at org.jgroups.protocols.FD_SOCK.down(FD_SOCK.java:362)
at org.jgroups.protocols.FD.down(FD.java:315)
at
org.jgroups.protocols.VERIFY_SUSPECT.down(VERIFY_SUSPECT.java:95)
at org.jgroups.protocols.pbcast.NAKACK.send(NAKACK.java:810)
at org.jgroups.protocols.pbcast.NAKACK.down(NAKACK.java:612)
at org.jgroups.protocols.UNICAST.down(UNICAST.java:462)
at org.jgroups.protocols.pbcast.STABLE$1.run(STABLE.java:644)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown
Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown
Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown
Source)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown
Source)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
Source)
at java.lang.Thread.run(Unknown Source)
2016-05-03 23:56:01,752 FATAL [org.jgroups.JChannel] (CloserThread)
local_addr is null; cannot connect
2016-05-03 23:56:01,752 ERROR [org.jgroups.JChannel] (CloserThread)
failure reconnecting to channel, retrying
org.jgroups.ChannelException: local_addr is null
at org.jgroups.JChannel.startStack(JChannel.java:1631)
at org.jgroups.JChannel.connect(JChannel.java:366)
at org.jgroups.JChannel$CloserThread.run(JChannel.java:2046)
2016-05-03 23:56:13,903 ERROR [org.jgroups.protocols.PING]
(Timer-4,10.10.62.82:34954) failed sending discovery request
java.lang.NullPointerException
at org.jgroups.protocols.TP.down(TP.java:1186)
at org.jgroups.protocols.TP$ProtocolAdapter.down(TP.java:2316)
at
org.jgroups.protocols.PING.sendMcastDiscoveryRequest(PING.java:278)
at
org.jgroups.protocols.PING.sendGetMembersRequest(PING.java:259)
at
org.jgroups.protocols.Discovery$PingSenderTask$1.run(Discovery.java:407)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown
Source)
at java.util.concurrent.FutureTask$Sync.innerRunAndReset(Unknown
Source)
at java.util.concurrent.FutureTask.runAndReset(Unknown Source)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(Unknown
Source)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(Unknown
Source)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown
Source)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
Source)
at java.lang.Thread.run(Unknown Source)
2016-05-03 23:56:36,788 WARN [org.jgroups.protocols.pbcast.NAKACK]
(Timer-1,10.10.62.82:34954) failure passing message down
java.lang.NullPointerException
at org.jgroups.protocols.TP.down(TP.java:1186)
at org.jgroups.protocols.TP$ProtocolAdapter.down(TP.java:2316)
at org.jgroups.protocols.Discovery.down(Discovery.java:374)
at org.jgroups.protocols.MERGE2.down(MERGE2.java:175)
at org.jgroups.protocols.FD_SOCK.down(FD_SOCK.java:362)
at org.jgroups.protocols.FD.down(FD.java:315)
at
org.jgroups.protocols.VERIFY_SUSPECT.down(VERIFY_SUSPECT.java:95)
at org.jgroups.protocols.pbcast.NAKACK.send(NAKACK.java:810)
at org.jgroups.protocols.pbcast.NAKACK.down(NAKACK.java:612)
at org.jgroups.protocols.UNICAST.down(UNICAST.java:462)
at org.jgroups.protocols.pbcast.STABLE$1.run(STABLE.java:644)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown
Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown
Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown
Source)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown
Source)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown
Source)
at java.lang.Thread.run(Unknown Source)

Despite of this error message, the server seems to be serving requested
just fine.
Not sure how to get rid of this error.

Please suggest.

Thank you,:confused:


--
ddgaikwad
------------------------------------------------------------------------
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