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https://issues.apache.org/jira/browse/KAFKA-1994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14379959#comment-14379959
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Ashish K Singh commented on KAFKA-1994:
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[~gwenshap] My apologies for the delay. Kindly find the comparison numbers
below. The numbers are averaged over 1000 iterations.
w/o any check: 635438 nanoseconds
w/ check from KAFKA-1664: 908189 nanoseconds (42.92% up)
w/ check suggested on this JIRA: 642484 nanoseonds (1.1% up)
The above comparison numbers are expected and in accordance to the discussion
on this JIRA.
> Evaluate performance effect of chroot check on Topic creation
> -------------------------------------------------------------
>
> Key: KAFKA-1994
> URL: https://issues.apache.org/jira/browse/KAFKA-1994
> Project: Kafka
> Issue Type: Improvement
> Reporter: Ashish K Singh
> Assignee: Ashish K Singh
> Attachments: KAFKA-1994.patch, KAFKA-1994_2015-03-03_18:19:45.patch
>
>
> KAFKA-1664 adds check for chroot while creating a node in ZK. ZkPath checks
> if namespace exists before trying to create a path in ZK. This raises a
> concern that checking namespace for each path creation might be unnecessary
> and can potentially make creations expensive.
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