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zookeeper + Unable to read additional data from client session id

hi all

we saw a millions WARN message from zookeeper log

2019-06-26 04:07:06,459 [myid:2] - WARN  [NIOServerCxn.Factory] - caught end of stream exception
EndOfStreamException: Unable to read additional data from client sessionid 0x26b8e150308cd3c, likely client has closed socket
    at org.apache.zookeeper.server.NIOServerCnxn.doIO(

what is the meaning of this warning ?



@Michael Bronson

Here is an article by HWX support "unable to read additional data from client session id" you could try check your to adjust those warnings.

@dear Geoffrey Shelton Okot · what you think about the link from stackoverflow ?


The above question were originally posted in the Community Help track. On Wed Jun 26 21:14 UTC 2019, a member of the HCC moderation staff moved it to the Cloud & Operations track. The Community Help Track is intended for questions about using the HCC site itself, not technical questions about zookeeper.

Bill Brooks, Community Moderator
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New Contributor

Hello. @mike_bronson7 

I also had same WARN message from zookeeper log.

Did you solve this problem?

My Kafka Cluster:

3 different servers.

1 zookeeper and 1 broker are on each server.

2 brokers are down after this WARN message.