viirya commented on a change in pull request #25965:
URL: https://github.com/apache/spark/pull/25965#discussion_r489180882
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/streaming/MicroBatchExecution.scala
##########
@@ -585,7 +585,8 @@ class MicroBatchExecution(
withProgressLocked {
sinkCommitProgress = batchSinkProgress
watermarkTracker.updateWatermark(lastExecution.executedPlan)
- commitLog.add(currentBatchId,
CommitMetadata(watermarkTracker.currentWatermark))
+ assert(commitLog.add(currentBatchId,
CommitMetadata(watermarkTracker.currentWatermark)),
+ s"Concurrent update to the log. Multiple streaming jobs detected for
$currentBatchId")
Review comment:
update to the log -> update to the commit log?
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