Jason Gustafson created KAFKA-3463:
--------------------------------------
Summary: Change default consumer receive buffer size to 64K
Key: KAFKA-3463
URL: https://issues.apache.org/jira/browse/KAFKA-3463
Project: Kafka
Issue Type: Improvement
Components: consumer
Reporter: Jason Gustafson
Assignee: Jason Gustafson
In KAFKA-3135, users have reported a strange pause when consuming data using
the new consumer. This can be easily reproduced with the console consumer, but
the root cause has so far proven elusive. Interestingly, the pause can also be
reproduced with the old consumer if you change the socket buffer size to 32K to
match the new consumer's default. Similarly, by increasing the new consumer's
connection receive buffer size to 64K to match the old consumer's default, the
problem seems to be mitigated (I am unable to reproduce it locally with this
setting, though others have reported that its impact is merely reduced). Since
there doesn't appear to be a good reason to have lowered the default for the
new consumer, we may as well revert to the old consumer's default of 64K and
accept the mitigation until an actual fix is found.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
