Hi,

Getting the following errors during shutdown of the topology, can I know what 
could be the reason?

2020-02-15 17:23:06,190 ERROR TThreadPoolServer [pool-14-thread-35] Thrift 
error occurred during processing of message.
org.apache.storm.thrift.transport.TTransportException: null
        at 
org.apache.storm.thrift.transport.TIOStreamTransport.read(TIOStreamTransport.java:132)
 ~[storm-core-1.2.3.jar:1.2.3]
        at 
org.apache.storm.thrift.transport.TTransport.readAll(TTransport.java:86) 
~[storm-core-1.2.3.jar:1.2.3]
        at 
org.apache.storm.thrift.transport.TSaslTransport.readLength(TSaslTransport.java:374)
 ~[storm-core-1.2.3.jar:1.2.3]
        at 
org.apache.storm.thrift.transport.TSaslTransport.readFrame(TSaslTransport.java:451)
 ~[storm-core-1.2.3.jar:1.2.3]
        at 
org.apache.storm.thrift.transport.TSaslTransport.read(TSaslTransport.java:433) 
~[storm-core-1.2.3.jar:1.2.3]
        at 
org.apache.storm.thrift.transport.TSaslServerTransport.read(TSaslServerTransport.java:43)
 ~[storm-core-1.2.3.jar:1.2.3]
        at 
org.apache.storm.thrift.transport.TTransport.readAll(TTransport.java:86) 
~[storm-core-1.2.3.jar:1.2.3]
        at 
org.apache.storm.thrift.protocol.TBinaryProtocol.readAll(TBinaryProtocol.java:425)
 ~[storm-core-1.2.3.jar:1.2.3]
        at 
org.apache.storm.thrift.protocol.TBinaryProtocol.readI32(TBinaryProtocol.java:321)
 ~[storm-core-1.2.3.jar:1.2.3]
        at 
org.apache.storm.thrift.protocol.TBinaryProtocol.readMessageBegin(TBinaryProtocol.java:225)
 ~[storm-core-1.2.3.jar:1.2.3]
        at 
org.apache.storm.thrift.TBaseProcessor.process(TBaseProcessor.java:27) 
~[storm-core-1.2.3.jar:1.2.3]
        at 
org.apache.storm.security.auth.SaslTransportPlugin$TUGIWrapProcessor.process(SaslTransportPlugin.java:145)
 ~[storm-core-1.2.3.jar:1.2.3]
        at 
org.apache.storm.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:310)
 ~[storm-core-1.2.3.jar:1.2.3]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 
[?:1.8.0_172]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
[?:1.8.0_172]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_172]

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