ASF GitHub Bot commented on KAFKA-7051:

cmccabe opened a new pull request #5206: KAFKA-7051: Improve the efficiency of 
URL: https://github.com/apache/kafka/pull/5206
   Improve the efficiency of the ReplicaManager when there are many
   The 'fetchInfo' argument to ReplicaManager#fetchMessages can be an
   iterator rather than a sequence.  This avoids the need to materialize
   a new collection in some cases.
   Reduce the number of times we loop over the read results obtained from
   Fix a case where we were performing an O(N^2) operation to join the set
   of partitions we wanted info about, and the set of partitions we
   obtained information about.

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> Improve the efficiency of the ReplicaManager when there are many partitions
> ---------------------------------------------------------------------------
>                 Key: KAFKA-7051
>                 URL: https://issues.apache.org/jira/browse/KAFKA-7051
>             Project: Kafka
>          Issue Type: Bug
>          Components: replication
>    Affects Versions: 0.8.0
>            Reporter: Colin P. McCabe
>            Assignee: Colin P. McCabe
>            Priority: Major

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