Every worker gets a SystemBolt. The bolt does not really process any data, it
just provides a set of worker level metrics.
https://github.com/apache/storm/blob/master/storm-core/src/jvm/org/apache/storm/metric/SystemBolt.java
- Bobby
On Monday, June 27, 2016 10:42 AM, Junguk Cho <jman...@gmail.com> wrote:
Hi,
In one worker, by default Storm creates one-executor and
one-executor-disruptor threads pair.
In detail, it created __system, __acker, and __bolt or __spout.
I understood __acker and __bolt or __spout, but what is the roles of
__system and __system-disruptor threads?
Another question is a benchmark.
I found one from Yahoo which they used it for netty vs zeromq test (
https://github.com/yahoo/storm-perf-test).
Are there well built benchmark like this to measure storm performances?
Thanks,
Junguk
