Jakob Homan created SAMZA-106:
---------------------------------
Summary: Cache hashcode for SystemStreamPartition
Key: SAMZA-106
URL: https://issues.apache.org/jira/browse/SAMZA-106
Project: Samza
Issue Type: Improvement
Components: container
Affects Versions: 0.6.0
Reporter: Jakob Homan
Assignee: Jakob Homan
Fix For: 0.7.0
Profiling shows that in jobs that consume lots of partitions (ooto hundreds), a
large chunk of the main thread's time (31.5%, in my tests) is spent
recalculating SystemStreamPartitions. Most of this (26.5%) comes from the
BlockingEnvelopeMetricsMap.incPoll. Since SSPs are (meant to be) immutable,
there's no reason to recalculate each time. We can just do it at object
creation and return that result.
--
This message was sent by Atlassian JIRA
(v6.1.4#6159)
