How to shutdown/restart kafka cluster properly

[Ivan Balashov <ib...@gmail.com>]

Hi,

Sorry if this had been answered before. Although, I couldn't find any
information besides "controlled shutdown of broker", which, I believe
not fully applies here.

Could anyone suggest what would be the safest strategy to shut down
kafka cluster? Should brokers be brought down one-by-one or
simultaneously? Does this strategy change depend on whether
"controlled shutdown" is on?

According to my brief observation, ad-hoc broker shutdown (mix and
match INT, TERM and KILL signals to the most resilient brokers)
results in prolonged cluster start up, with a long chain of
"Recovering unflushed segment 0" seen on some brokers. Is it expected
to see these after each shutdown/restart?

Thanks in advance,

Re: How to shutdown/restart kafka cluster properly

[Joel Koshy <jj...@gmail.com>]

Please go through this section:

http://kafka.apache.org/documentation.html#basic_ops_restarting

On Tue, Aug 19, 2014 at 01:19:34AM +0400, Ivan Balashov wrote:
> Hi,
> 
> Sorry if this had been answered before. Although, I couldn't find any
> information besides "controlled shutdown of broker", which, I believe
> not fully applies here.
> 
> Could anyone suggest what would be the safest strategy to shut down
> kafka cluster? Should brokers be brought down one-by-one or
> simultaneously? Does this strategy change depend on whether
> "controlled shutdown" is on?
> 
> According to my brief observation, ad-hoc broker shutdown (mix and
> match INT, TERM and KILL signals to the most resilient brokers)
> results in prolonged cluster start up, with a long chain of
> "Recovering unflushed segment 0" seen on some brokers. Is it expected
> to see these after each shutdown/restart?
> 
> Thanks in advance,