Ron Dagostino created KAFKA-13270:
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Summary: Kafka may fail to connect to ZooKeeper, retry forever,
and never start
Key: KAFKA-13270
URL: https://issues.apache.org/jira/browse/KAFKA-13270
Project: Kafka
Issue Type: Bug
Affects Versions: 3.0.0
Reporter: Ron Dagostino
Assignee: Ron Dagostino
Fix For: 3.0.0
The implementation of https://issues.apache.org/jira/browse/ZOOKEEPER-3593 in
ZooKeeper version 3.6.0 decreased the default value for the ZooKeeper client's
`jute.maxbuffer` configuration from 4MB to 1MB. This can cause a problem if
Kafka tries to retrieve a large amount of data across many znodes -- in such a
case the ZooKeeper client will repeatedly emit a message of the form
"java.io.IOException: Packet len <####> is out of range" and the Kafka broker
will never connect to ZooKeeper and fail make progress on the startup sequence.
We can avoid the potential for this issue to occur by explicitly setting the
value to 4MB whenever we create a new ZooKeeper client as long as no explicit
value has been set via the `jute.maxbuffer` system property.
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