Tathagata Das created SPARK-3495:
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Summary: Block replication fails continuously when the replication
target node is dead
Key: SPARK-3495
URL: https://issues.apache.org/jira/browse/SPARK-3495
Project: Spark
Issue Type: Bug
Components: Block Manager, Spark Core, Streaming
Affects Versions: 1.0.2, 1.1.0
Reporter: Tathagata Das
Assignee: Tathagata Das
Priority: Critical
If a block manager (say, A) wants to replicate a block and the node chosen for
replication (say, B) is dead, then the attempt to send the block to B fails.
However, this continues to fail indefinitely. Even if the driver learns about
the demise of the B, A continues to try replicating to B and failing miserably.
The reason behind this bug is that A initially fetches a list of peers from the
driver (when B was active), but never updates it after B is dead. This affects
Spark Streaming as its receiver uses block replication.
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