Sailesh Mukil has posted comments on this change.

Change subject: IMPALA-5857: avoid invalid free of hedged read metrics
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Patch Set 1: Code-Review+2

(1 comment)

http://gerrit.cloudera.org:8080/#/c/7885/1/be/src/runtime/disk-io-mgr-scan-range.cc
File be/src/runtime/disk-io-mgr-scan-range.cc:

PS1, Line 354: struct hdfsHedgedReadMetrics* hedged_metrics;
> I think it's coincidental that hdfsFreeHedgedReadMetrics() currently works 
It just calls a free(ptr):
http://github.mtv.cloudera.com/CDH/hadoop/blob/9ffaadf806c7a061f3494ebdcaec9d43da24b2bf/hadoop-hdfs-project/hadoop-hdfs/src/main/native/libhdfs/hdfs.c#L174


But I agree that it's better to rely on the documented interface rather than 
the internal implementation that could change at any point.


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Gerrit-MessageType: comment
Gerrit-Change-Id: I93baf3b672429c0283d7f031ff302aca31e05be4
Gerrit-PatchSet: 1
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Tim Armstrong <[email protected]>
Gerrit-Reviewer: Matthew Jacobs <[email protected]>
Gerrit-Reviewer: Sailesh Mukil <[email protected]>
Gerrit-Reviewer: Tim Armstrong <[email protected]>
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