Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/10934#discussion_r51330708
--- Diff:
streaming/src/main/scala/org/apache/spark/streaming/scheduler/JobGenerator.scala
---
@@ -243,6 +244,10 @@ class JobGenerator(jobScheduler: JobScheduler) extends
Logging {
// Example: BlockRDDs are created in this thread, and it needs to
access BlockManager
// Update: This is probably redundant after threadlocal stuff in
SparkEnv has been removed.
SparkEnv.set(ssc.env)
+
+ // Enable "spark.checkpoint.checkpointAllMarked" to make sure that all
RDDs marked with the
+ // checkpoint flag are all checkpointed to avoid the stack overflow
issue. See SPARK-6847
--- End diff --
No need to duplicate the name of the flag here again, just say:
```
// Checkpoint all RDDs marked for checkpointing to ensure their lineages
are truncated
// periodically. Otherwise, we may run into stack overflows (SPARK-6847).
```
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