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[HDFS-4879] Add "blocked ArrayList" collection to avoid CMS full GCs - HDFS - [issue]
...We recently saw an issue where a large deletion was issued which caused 25M blocks to be collected during deleteInternal. Currently, the list of collected blocks is an ArrayList, meaning tha...
http://issues.apache.org/jira/browse/HDFS-4879    Author: Todd Lipcon , 2016-05-12, 18:12
[HDFS-2776] Missing interface annotation on JournalSet - HDFS - [issue]
...This public class is missing an annotation that it is for private usage....
http://issues.apache.org/jira/browse/HDFS-2776    Author: Todd Lipcon , 2016-05-12, 18:12
[HDFS-3872] Store block ID in block metadata header - HDFS - [issue]
...We recently had an interesting local filesystem corruption in one cluster, which caused a block and its associated metadata file to get replaced with a data/meta pair from an entirely differ...
http://issues.apache.org/jira/browse/HDFS-3872    Author: Todd Lipcon , 2016-05-12, 18:12
[HDFS-4182] SecondaryNameNode leaks NameCache entries - HDFS - [issue]
...We recently saw an issue where a 2NN ran out of memory, even though it had a relatively small fsimage. When we looked at the heap dump, we saw that all of the memory had gone to entries in t...
http://issues.apache.org/jira/browse/HDFS-4182    Author: Todd Lipcon , 2016-05-12, 18:11
[HDFS-4049] hflush performance regression due to nagling delays - HDFS - [issue]
...HDFS-3721 reworked the way that packets are mirrored through the pipeline in the datanode. This caused two write() calls where there used to be one, which interacts badly with nagling so tha...
http://issues.apache.org/jira/browse/HDFS-4049    Author: Todd Lipcon , 2016-05-12, 18:11
[HDFS-2276] src/test/unit tests not being run in mavenized HDFS - HDFS - [issue]
...There are about 5 tests in src/test/unit that are no longer being run....
http://issues.apache.org/jira/browse/HDFS-2276    Author: Todd Lipcon , 2016-03-17, 16:45
[HDFS-2288] Replicas awaiting recovery should return a full visible length - HDFS - [issue]
...Currently, if the client calls getReplicaVisibleLength for a RWR, it returns a visible length of 0. This causes one of HBase's tests to fail, and I believe it's incorrect behavior....
http://issues.apache.org/jira/browse/HDFS-2288    Author: Todd Lipcon , 2016-03-04, 21:53
[HDFS-3187] Upgrade guava to 11.0.2 - HDFS - [issue]
...Guava r11 includes some nice features which we'd like to use in the implementation of HDFS-3077. In particular, MoreExecutors.listeningDecorator allows a normal ExecutorService to be turned ...
http://issues.apache.org/jira/browse/HDFS-3187    Author: Todd Lipcon , 2016-02-11, 21:36
[HDFS-1613] NPE running NNThroughputBenchmark - HDFS - [issue]
...After the NNThroughputBenchmark completes, I see the following NPEs on the console:java.lang.NullPointerException        at org.apache.hadoop.hdfs.server.namenode.BlocksM...
http://issues.apache.org/jira/browse/HDFS-1613    Author: Todd Lipcon , 2016-01-29, 22:23
[HDFS-1771] HDFS ivy dependencies aren't on classpath of bin/hdfs script - HDFS - [issue]
...In working on another patch, I added guava as a dependency of HDFS. It ended up in ./build/ivy/lib/hadoop-hdfs/common/guava-r07.jar, but running bin/hdfs doesn't put this directory on the cl...
http://issues.apache.org/jira/browse/HDFS-1771    Author: Todd Lipcon , 2015-09-28, 21:08