GitHub user arunmahadevan opened a pull request:
https://github.com/apache/storm/pull/2218
STORM-2614: Enhance stateful windowing to persist the window state
Right now the tuples in window are stored in memory. This limits the usage
to windows
that fit in memory. Also the source tuples cannot be acked until the window
expiry.
By persisting the window transparently in the state backend and
caching/iterating them as needed,
we could support larger windows and also support windowed bolts with
user/application state.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/arunmahadevan/storm STORM-2614
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/storm/pull/2218.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2218
----
commit 376d3120a5075d9687f63a587dca5e040a5aa6eb
Author: Arun Mahadevan <[email protected]>
Date: 2017-06-28T16:13:26Z
STORM-2614: Enhance stateful windowing to persist the window state
Right now the tuples in window are stored in memory. This limits the usage
to windows
that fit in memory. Also the source tuples cannot be acked until the window
expiry.
By persisting the window transparently in the state backend and
caching/iterating them as needed,
we could support larger windows and also support windowed bolts with
user/application state.
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