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https://issues.apache.org/jira/browse/KAFKA-8402?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16846315#comment-16846315
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huxihx commented on KAFKA-8402:
-------------------------------
A possible solution is to throw an exception when the length of the encoded
byte array hits the 1MB threshold.
> bin/kafka-preferred-replica-election.sh fails if generated json is bigger
> than 1MB
> ----------------------------------------------------------------------------------
>
> Key: KAFKA-8402
> URL: https://issues.apache.org/jira/browse/KAFKA-8402
> Project: Kafka
> Issue Type: Bug
> Components: tools
> Affects Versions: 1.1.1
> Reporter: Vyacheslav Stepanov
> Priority: Major
>
> If I run script {{bin/kafka-preferred-replica-election.sh}} without
> specifying the list of topics/partitions - it will get all topics/partitions
> from zookeeper and transform that to json, then it will create zookeeper node
> at {{/admin/preferred_replica_election}} using this json as data for that
> zookeeper node. If the generated json is bigger than 1MB (default max size of
> data of zookeeper node) - the script will fail without giving a good
> description of failure. The size of 1MB can be reached if the amount of
> topics/partitions is high enough.
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