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[HADOOP-10489] UserGroupInformation#getTokens and UserGroupInformation#addToken can lead to ConcurrentModificationException - Hadoop - [issue]
...Currently UserGroupInformation#getTokens and UserGroupInformation#addToken uses UGI's monitor to protect the iteration and modification of Credentials#tokenMap. Per discussion in HADOOP-1047...
http://issues.apache.org/jira/browse/HADOOP-10489    Author: Jing Zhao, 2014-04-10, 22:24
[HADOOP-7661] FileSystem.getCanonicalServiceName throws NPE for any file system uri that doesn't have an authority. - Hadoop - [issue]
...FileSystem.getCanonicalServiceName throws NPE for any file system uri that doesn't have an authority. ....java.lang.NullPointerExceptionat org.apache.hadoop.net.NetUtils.createSocketAddr(Net...
http://issues.apache.org/jira/browse/HADOOP-7661    Author: Jitendra Nath Pandey, 2014-04-10, 22:00
[HADOOP-7738] Document incompatible API changes between 0.20.20x and 0.23.0 release - Hadoop - [issue]
...0.20.20x to 0.23.0 will be a common upgrade path, so we should document any incompatible API changes that will affect users....
http://issues.apache.org/jira/browse/HADOOP-7738    Author: Tom White, 2014-04-10, 21:57
[HADOOP-9856] Avoid Krb5LoginModule.logout issue - Hadoop - [issue]
...The kerberos login module's logout method arguably has a bug.  Subject#getPrivateCredentials() returns a synchronized set.  Iterating the set requires explicitly locking the set. &...
http://issues.apache.org/jira/browse/HADOOP-9856    Author: Daryn Sharp, 2014-04-10, 21:50
[HADOOP-9749] Remove synchronization for UGI.getCurrentUser - Hadoop - [issue]
...HADOOP-7854 added synchronization to getCurrentUser due to ConcurrentModificationExceptions.  This degrades NN call handler performance.The problem was not well understood at the time, ...
http://issues.apache.org/jira/browse/HADOOP-9749    Author: Daryn Sharp, 2014-04-10, 21:48
[HADOOP-9747] Reduce unnecessary UGI synchronization - Hadoop - [issue]
...Jstacks of heavily loaded NNs show up to dozens of threads blocking in the UGI....
http://issues.apache.org/jira/browse/HADOOP-9747    Author: Daryn Sharp, 2014-04-10, 21:48
[HADOOP-7723] Automatically generate good Release Notes - Hadoop - [issue]
...In branch-0.20-security, there is a tool src/docs/relnotes.py, that automatically generates Release Notes.  Fix deficiencies and port it up to trunk....
http://issues.apache.org/jira/browse/HADOOP-7723    Author: Matt Foley, 2014-04-10, 21:48
[HADOOP-10429] KeyStores should have methods to generate the materials themselves, KeyShell should use them - Hadoop - [issue]
...Currently, the KeyProvider API expects the caller to provide the key materials. And, the KeyShell generates key materials.For security reasons, KeyProvider implementations may want to genera...
http://issues.apache.org/jira/browse/HADOOP-10429    Author: Alejandro Abdelnur, 2014-04-10, 20:08
[HADOOP-10428] JavaKeyStoreProvider should accept keystore password via configuration falling back to ENV VAR - Hadoop - [issue]
...Currently the password for the JavaKeyStoreProvider must be set in an ENV VAR.Allowing the password to be set via configuration enables applications to interactively ask for the password bef...
http://issues.apache.org/jira/browse/HADOOP-10428    Author: Alejandro Abdelnur, 2014-04-10, 20:08
[HADOOP-10427] KeyProvider implementations should be thread safe - Hadoop - [issue]
...The KeyProvider API should be thread-safe so it can be used safely in server apps....
http://issues.apache.org/jira/browse/HADOOP-10427    Author: Alejandro Abdelnur, 2014-04-10, 20:08
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