Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/7069#discussion_r33498576
--- Diff: core/src/main/scala/org/apache/spark/deploy/SparkHadoopUtil.scala
---
@@ -334,6 +334,17 @@ class SparkHadoopUtil extends Logging {
* Stop the thread that does the delegation token updates.
*/
private[spark] def stopExecutorDelegationTokenRenewer() {}
+
+ /**
+ * Disable the hadoop fs cache mechanism, otherwise DFSClient will use
old token to connect nn.
--- End diff --
can you be more explicit here: `otherwise DFSClient will use old token to
connect to the NameNode`. This piece of code is confusing enough. We should at
least have clear comments.
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