xinyuiscool commented on a change in pull request #939: SAMZA-2122: Fix the
task caught-up logic which doesn't handle no incoming messages
URL: https://github.com/apache/samza/pull/939#discussion_r263086086
##########
File path:
samza-core/src/main/scala/org/apache/samza/container/TaskInstance.scala
##########
@@ -321,6 +323,25 @@ class TaskInstance(
}
}
+ def initCaughtUpMapping() {
+ if (taskContext.getStreamMetadataCache != null) {
+ systemStreamPartitions.foreach(ssp => {
+ val partitionMetadata = taskContext
+ .getStreamMetadataCache
+ .getSystemStreamMetadata(ssp.getSystemStream, false)
+ .getSystemStreamPartitionMetadata.get(ssp.getPartition)
+
+ val upcomingOffset = partitionMetadata.getUpcomingOffset
+ val startingOffset = offsetManager.getStartingOffset(taskName, ssp)
+ .getOrElse(throw new SamzaException("No offset defined for
SystemStreamPartition: %s" format ssp))
+
+ if(Objects.equals(upcomingOffset, startingOffset)) {
+ ssp2CaughtupMapping(ssp) = true
Review comment:
Added.
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