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From "Arun Mahadevan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SPARK-24136) MemoryStreamDataReader.next should skip sleeping if record is available
Date Tue, 01 May 2018 16:47:00 GMT
Arun Mahadevan created SPARK-24136:
--------------------------------------

             Summary: MemoryStreamDataReader.next should skip sleeping if record is available
                 Key: SPARK-24136
                 URL: https://issues.apache.org/jira/browse/SPARK-24136
             Project: Spark
          Issue Type: Improvement
          Components: Structured Streaming
    Affects Versions: 2.4.0
            Reporter: Arun Mahadevan


Currently the code sleeps 10ms for each invocation of the next even if the record is available.
{code:java}
override def next(): Boolean = {
current = None
 while (current.isEmpty) {
 Thread.sleep(10)
current = endpoint.askSync[Option[Row]](
GetRecord(ContinuousMemoryStreamPartitionOffset(partition, currentOffset)))
 }{code}



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