Libin, Sun created EAGLE-57:
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Summary: Eagle should expose interface for use to set numTask for
spout/bolt
Key: EAGLE-57
URL: https://issues.apache.org/jira/browse/EAGLE-57
Project: Eagle
Issue Type: Bug
Reporter: Libin, Sun
Fix For: 0.3.0
storm provide interface for setting both parallelism hints(# storm executors)
and # task for spout/bolt like the following
{code:title=Bar.java|borderStyle=solid}
topologyBuilder.setBolt("green-bolt", new GreenBolt(), 2)
.setNumTasks(4)
{code}
But currently eagle only provide setting #parallelism for storm bolt/spout like:
{code:title=Bar.java|borderStyle=solid}
"parallelismConfig" : {
"kafkaMsgConsumer" : 8,
}
{code}
We have not exposed #task settings for spout/bolt, user can only set topology
level default #task in topology-storm.yaml like "topology.tasks: 8"
This is not enough because each bolt/spout has different #parallelism, In most
case, #parallelism should better equals to #task
A bolt with #parallelism=1 task=8 doesn't make sense for it's not efficient
storm.yaml
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