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[HDFS-2882] DN continues to start up, even if block pool fails to initialize - HDFS - [issue]
...I started a DN on a machine that was completely out of space on one of its drives. I saw the following:2012-02-02 09:56:50,499 FATAL org.apache.hadoop.hdfs.server.datanode.DataNode: Initiali...
http://issues.apache.org/jira/browse/HDFS-2882    Author: Todd Lipcon, 2015-01-30, 21:07
[HDFS-3519] Checkpoint upload may interfere with a concurrent saveNamespace - HDFS - [issue]
...TestStandbyCheckpoints failed in precommit build 2620 due to the following issue: both nodes were in Standby state, and configured to checkpoint "as fast as possible" NN1 starts to save its ...
http://issues.apache.org/jira/browse/HDFS-3519    Author: Todd Lipcon, 2015-01-23, 15:23
[HDFS-956] Improper synchronization in some FSNamesystem methods - HDFS - [issue]
...There are some methods in FSNamesystem that check isInSafeMode while not synchronized, and then proceed to perform operations. Thus the actual operations can occur after the NN has entered s...
http://issues.apache.org/jira/browse/HDFS-956    Author: Todd Lipcon, 2015-01-20, 00:48
[HADOOP-8757] Metrics should disallow names with invalid characters - Hadoop - [issue]
...Just spent a couple hours trying to figure out why a metric I added didn't show up in JMX, only to eventually realize it was because I had a whitespace in the property name. This didn't caus...
http://issues.apache.org/jira/browse/HADOOP-8757    Author: Todd Lipcon, 2015-01-16, 15:41
[HADOOP-7107] Ability to retrigger Hudson QA bot without re-uploading patch - Hadoop - [issue]
...Currently to retrigger the test-patch bot you have to upload a new patch. This doesn't work well for a couple cases: sometimes a build fails due to issues on a build machine (eg all tests ti...
http://issues.apache.org/jira/browse/HADOOP-7107    Author: Todd Lipcon, 2015-01-14, 01:13
[HADOOP-6412] Add ability to retrigger hudson with special token in comment - Hadoop - [issue]
...It would be great if you could put some magic token (eg @HudsonTrigger) in the body of any JIRA comment in order to get the QA bot to rerun on the latest patch. Currently you have to toggle ...
http://issues.apache.org/jira/browse/HADOOP-6412    Author: Todd Lipcon, 2015-01-14, 01:13
[HBASE-3243] Disable Table closed region on wrong host - HBase - [issue]
...I ran some YCSB benchmarks which resulted in about 150 regions worth of data overnight. Then I disabled the table, and the master for some reason closed one region on the wrong server. The s...
http://issues.apache.org/jira/browse/HBASE-3243    Author: Todd Lipcon, 2015-01-13, 00:47
[HBASE-3350] Disabling table while splitting leaves regions in transition - HBase - [issue]
...With my "crazy conf" that causes tons of splits, I had a 2000 region table, which I disabled while inserting data (similar to HBASE-3345). This time I didn't get NPE, but I ended up with 68 ...
http://issues.apache.org/jira/browse/HBASE-3350    Author: Todd Lipcon, 2014-12-29, 19:48
[HBASE-3472] New import/export jobs based on HFiles - HBase - [issue]
...Not sure if I'll have time to work on this, but the old sequencefile-based import/export are not as efficient as one based on HFiles would be. Idea is: hbase exporthf: TableInputFormat ->...
http://issues.apache.org/jira/browse/HBASE-3472    Author: Todd Lipcon, 2014-12-29, 18:57
[HBASE-4807] Use of Serializable in IPC makes an unnecessary copy - HBase - [issue]
...This code path isn't used much, but in HbaseObjectWritable, the code to serialize and deserialize Serializables makes an unnecessary copy through ByteArrayOutputStream.toByteArray. Instead w...
http://issues.apache.org/jira/browse/HBASE-4807    Author: Todd Lipcon, 2014-12-24, 20:08
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB