licun created SPARK-22782:
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Summary: Boost speed, use kafka010 consumer kafka
Key: SPARK-22782
URL: https://issues.apache.org/jira/browse/SPARK-22782
Project: Spark
Issue Type: Improvement
Components: Structured Streaming
Affects Versions: 2.2.0, 2.1.0
Environment: kafka-version: 0.10
spark-version: 2.2.0
schedule spark on yarn
Reporter: licun
Priority: Critical
We use spark structured streaming to consumer kafka, but we find the
consumer speed is too slow compare spark streaming . we set kafka
"maxOffsetsPerTrigger": 100000000.
By adding debug log in CachedKafkaConsumer.scala (kafka-0-10-sql), we found
the following situation:
The debug code:
{color:red}private def poll(pollTimeoutMs: Long): Unit = {
val startTime = System.currentTimeMillis()
val p = consumer.poll(pollTimeoutMs)
val r = p.records(topicPartition)
val endTime = System.currentTimeMillis()
val delta = endTime - startTime
logError(s"Polled $groupId ${p.partitions()}, Size:${r.size}, spend:
${delta} ms")
fetchedData = r.iterator
}{color}
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