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[SPARK-19995][YARN] Register tokens to current UGI to avoid re-issuing of tokens in yarn client mode #17335

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jerryshao wants to merge 4 commits into from
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[SPARK-19995][YARN] Register tokens to current UGI to avoid re-issuing of tokens in yarn client mode #17335

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d31dcb3
Using real user to initialize hive SessionState
jerryshao Mar 17, 2017
85a4220
Use delegation tokens to authenticate metastore connection
jerryshao Mar 21, 2017
11a1094
Remove unnecessary import
jerryshao Mar 21, 2017
e9b5580
Fix NPE bug in the code
jerryshao Mar 21, 2017
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3 changes: 3 additions & 0 deletions resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -371,6 +371,9 @@ private[spark] class Client(
val nearestTimeOfNextRenewal = credentialManager.obtainCredentials(hadoopConf, credentials)

if (credentials != null) {
// Add credentials to current user's UGI, so that following operations don't need to use the
// Kerberos tgt to get delegations again in the client side.
UserGroupInformation.getCurrentUser.addCredentials(credentials)
logDebug(YarnSparkHadoopUtil.get.dumpTokens(credentials).mkString("\n"))
}

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