[jira] [Created] (KAFKA-6371) FetchMetadata creates unneeded Strings on instantiation

["Maytee Chinavanichkit (JIRA)" <ji...@apache.org>]

Maytee Chinavanichkit created KAFKA-6371:
--------------------------------------------

             Summary: FetchMetadata creates unneeded Strings on instantiation
                 Key: KAFKA-6371
                 URL: https://issues.apache.org/jira/browse/KAFKA-6371
             Project: Kafka
          Issue Type: Bug
    Affects Versions: 0.10.2.1, 0.10.1.1, 0.10.0.1
            Reporter: Maytee Chinavanichkit
            Assignee: Maytee Chinavanichkit
            Priority: Minor
             Fix For: 0.10.0.2, 0.10.1.2, 0.10.2.2


My colleague and I were taking a heap dump to investigate the memory usage of a broker. From the dump, we saw a number of object strings with the message {{onlyCommitted: <redacted>}} and {{partitionStatus: <redacted>]}}. Upon investigation, these objects were being instantiated when the {{FetchMetadata}} object is constructed. The toString method here is malformed and the last two lines are executed as a block instead of being concatenated. 



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)