GitHub user svar29 opened a pull request:
https://github.com/apache/spark/pull/3141
SPARK-4276 fix for two working thread
Spark streaming requires at least two working threads.But example in
spark/examples/src/main/scala/org/apache/spark/examples/streaming/NetworkWordCount.scala
has
// Create the context with a 1 second batch size
val sparkConf = new SparkConf().setAppName("NetworkWordCount")
val ssc = new StreamingContext(sparkConf, Seconds(1))
which creates only 1 thread.
It should have atleast 2 threads:
http://spark.apache.org/docs/latest/streaming-programming-guide.html
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/svar29/spark streaming-multiple-threads
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/3141.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 #3141
----
commit 700dfb4957dae32625cf6af2da5482775677c049
Author: Varun Sharma <[email protected]>
Date: 2014-11-06T17:43:39Z
SPARK-4276 fix for two working thread
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