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Ashish K Singh commented on KAFKA-1994: --------------------------------------- [~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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)