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HADOOP-11722. Some Instances of Services using ZKDelegationTokenSecretManager go down when old token cannot be deleted. Contributed by Arun Suresh. 

(cherry picked from commit fc90bf7b27)
This commit is contained in:
Aaron T. Myers 2015-03-17 19:41:36 -07:00
parent ab34e6975b
commit 85473cd61a
2 changed files with 23 additions and 2 deletions
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4
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -700,6 +700,10 @@ Release 2.7.0 - UNRELEASED
HADOOP-11720. [JDK8] Fix javadoc errors caused by incorrect or illegal
tags in hadoop-tools. (Akira AJISAKA via ozawa)
HADOOP-11722. Some Instances of Services using
ZKDelegationTokenSecretManager go down when old token cannot be deleted.
(Arun Suresh via atm)
Release 2.6.1 - UNRELEASED
INCOMPATIBLE CHANGES

17
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/token/delegation/ZKDelegationTokenSecretManager.java
View File

@ -55,6 +55,7 @@
import org.apache.hadoop.security.token.delegation.web.DelegationTokenManager;
import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.KeeperException;
import org.apache.zookeeper.KeeperException.NoNodeException;
import org.apache.zookeeper.ZooDefs.Perms;
import org.apache.zookeeper.client.ZooKeeperSaslClient;
import org.apache.zookeeper.data.ACL;
@ -709,7 +710,15 @@ protected void removeStoredMasterKey(DelegationKey key) {
try {
if (zkClient.checkExists().forPath(nodeRemovePath) != null) {
while(zkClient.checkExists().forPath(nodeRemovePath) != null){
try {
zkClient.delete().guaranteed().forPath(nodeRemovePath);
} catch (NoNodeException nne) {
// It is possible that the node might be deleted between the
// check and the actual delete.. which might lead to an
// exception that can bring down the daemon running this
// SecretManager
LOG.debug("Node already deleted by peer " + nodeRemovePath);
}
}
} else {
LOG.debug("Attempted to delete a non-existing znode " + nodeRemovePath);
@ -761,7 +770,15 @@ protected void removeStoredToken(TokenIdent ident)
try {
if (zkClient.checkExists().forPath(nodeRemovePath) != null) {
while(zkClient.checkExists().forPath(nodeRemovePath) != null){
try {
zkClient.delete().guaranteed().forPath(nodeRemovePath);
} catch (NoNodeException nne) {
// It is possible that the node might be deleted between the
// check and the actual delete.. which might lead to an
// exception that can bring down the daemon running this
// SecretManager
LOG.debug("Node already deleted by peer " + nodeRemovePath);
}
}
} else {
LOG.debug("Attempted to remove a non-existing znode " + nodeRemovePath);