Github user tgravescs commented on a diff in the pull request:
https://github.com/apache/spark/pull/14065#discussion_r71357664
--- Diff:
yarn/src/main/scala/org/apache/spark/deploy/yarn/security/AMDelegationTokenRenewer.scala
---
@@ -171,10 +174,10 @@ 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)
+ val nearestNextTime =
credentialManager.obtainCredentials(freshHadoopConf, tempCreds)
+ require(nearestNextTime > System.currentTimeMillis(),
+ s"Time of next renewal $nearestNextTime is earlier than now")
+ timeOfNextRenewal = nearestNextTime
--- End diff --
driverTokenRenewerRunnable is hardcoded to renew every hour:
delegationTokenRenewer.schedule(this, 1, TimeUnit.HOURS)
We should probably make this configurable. Ideally nothing needs to be
renewed that often but if we are wanting to support arbitrary services making
it configurable would make sense.
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