I get it. Thank you again for you kind help!! Have a nice day!!
On 03/17/2015 11:55 AM, Nathan Leung wrote:
If you emit with a messageId, then the tuple will be tracked from the
spout. Then if you anchor in the bolts, the bolt's tuples will also
be tracked. If you don't want your tuples to be tracked at all then
disabled the ackers (as you have done) or emit without a message ID in
the spout.
On Tue, Mar 17, 2015 at 11:45 AM, hjh <[email protected]
<mailto:[email protected]>> wrote:
Thank you! I know that but we are still unable to find the
problem. If I turn on the acker but do not anchor the tuple does
that mean the tuple will still not be processed in a reliable way?
On 03/17/2015 11:28 AM, Nathan Leung wrote:
No, you need something to process the acks otherwise there's no
way to tell what has processed successfully and what is timing
out. It's better to figure out why enabling acking is causing
your topology to fail. That sounds ... bad.
On Tue, Mar 17, 2015 at 11:07 AM, hjh <[email protected]
<mailto:[email protected]>> wrote:
Thank you very much for the quick response. By the way I
forgot to tell that I disabled the acker in the topology
since the topology may die after a few seconds if I do not
turn off ackers. In this case is it still possible to do
guaranteed message processing for some of the bolts? Thank you!!
On 03/17/2015 10:16 AM, Nathan Leung wrote:
When you emit from bolt c do not anchor the output tuple to
the input tuple.
On Mar 17, 2015 9:55 AM, "hjh" <[email protected]
<mailto:[email protected]>> wrote:
Hi everyone,
I am confused about reliability API of storm. It
seems that guaranteed message processing is only for
spout. What if I need to guarantee message being
processed in a subset of bolts? For example, bolt A, B,
C are connected and tuples are processed from A to B and
to C, what should I do if I want tuples passed through
these three bolts being processed fully? I mean once a
tuple is passed to A then I should make sure that this
tuple is processed in B and C but after that I do not
care whether it is lost or not? Thank you very much!!
Best wishes!!
