Does Kafka Sync/persist every message from a publisher by default?

[kant kodali <ka...@gmail.com>]

Does Kafka Sync/persist every message from a publisher by default? If not, What
settings should I change so I Sync every message?

RE: Does Kafka Sync/persist every message from a publisher by default?

["Tauzell, Dave" <Da...@surescripts.com>]

If by "sync" you mean "fsync" then, no it does not.   There are some properties:

log.flush.interval.messages
log.flush.interval.ms

In theory you could set log.flush.interval.messages to 1 to fsync with each write.  I haven't tried this to see what happens but I expect performance will drop quite  a bit.

-Dave

-----Original Message-----
From: kant kodali [mailto:kanth909@gmail.com]
Sent: Thursday, September 22, 2016 6:55 PM
To: users@kafka.apache.org
Subject: Does Kafka Sync/persist every message from a publisher by default?

Does Kafka Sync/persist every message from a publisher by default? If not, What settings should I change so I Sync every message?
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