GitHub user jiajunwang opened a pull request:
https://github.com/apache/helix/pull/89
[HELIX-655] Helix per-participant concurrent task throttling
Add per participant concurrent task throttling.
1. Add a participant configuration item "MAX_CONCURRENT_TASK" for
throttling.
New assigned task + existing running/init task <= MAX_CONCURRENT_TASK.
Otherwise, new assignment won't be included in best possible state.
2. Tasks are assigned in the order of jobs' start time. Older jobs have
higher priority than other jobs.
3. Add test case (TestTaskThrottling.java) for testing new throttling and
priority.
Ticket:
https://issues.apache.org/jira/browse/HELIX-655
Test:
mvn test in helix-core
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/jiajunwang/helix helix-0.6.x
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/helix/pull/89.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 #89
----
commit 1db00f63f7ef300b308fb50b7fa6651b771ba07d
Author: Jiajun Wang <jjw...@linkedin.com>
Date: 2017-05-03T07:50:49Z
[HELIX-655] Helix per-participant concurrent task throttling
Add per participant concurrent task throttling.
1. Add a participant configuration item "MAX_CONCURRENT_TASK" for
throttling.
New assigned task + existing running/init task <= MAX_CONCURRENT_TASK.
Otherwise, new assignment won't be included in best possible state.
2. Tasks are assigned in the order of jobs' start time. Older jobs have
higher priority than other jobs.
3. Add test case (TestTaskThrottling.java) for testing new throttling and
priority.
Ticket:
https://issues.apache.org/jira/browse/HELIX-655
Test:
mvn test in helix-core
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