Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/14065#discussion_r71047626
--- Diff:
yarn/src/main/scala/org/apache/spark/deploy/yarn/security/AMDelegationTokenRenewer.scala
---
@@ -171,10 +175,13 @@ private[yarn] class AMDelegationTokenRenewer(
keytabLoggedInUGI.doAs(new PrivilegedExceptionAction[Void] {
// Get a copy of the credentials
override def run(): Void = {
- val nns = YarnSparkHadoopUtil.get.getNameNodesToAccess(sparkConf)
+ dst
- hadoopUtil.obtainTokensForNamenodes(nns, freshHadoopConf,
tempCreds)
- hadoopUtil.obtainTokenForHiveMetastore(sparkConf, freshHadoopConf,
tempCreds)
- hadoopUtil.obtainTokenForHBase(sparkConf, freshHadoopConf,
tempCreds)
+ var nearestNextTime = Long.MaxValue
+ credentialManager.obtainCredentials(freshHadoopConf,
tempCreds).foreach { nextTime =>
--- End diff --
This logic looks identical to the one in `Client.scala`. Maybe
`credentialManager.obtainCredentials` should do this calculation and return
when to next invoke credential renewal?
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