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[expand - 2 more] - Re: Thinking ahead to hadoop-2.6 - HDFS - [mail # dev]
...Hey Nicholas,My concern about Archival Storage isn't related to the code quality or thesize of the feature. I think that you and Jing did good work. My concern isthat once we ship, we're loc...
   Author: Andrew Wang, 2014-09-24, 18:37
Re: [VOTE] Merge HDFS-6584 Archival Storage to trunk - HDFS - [mail # dev]
...Hi all,I commented on HDFS-6584 with some feedback. Overall, the design looksreasonable and I think most of it can be addressed after the merge, thoughI'd appreciate a design doc rev and use...
   Author: Andrew Wang, 2014-09-12, 01:18
Re: Standby node from HADOOP-4539 - HDFS - [mail # dev]
...Hi Dmitry,Check out the docs here, our current HA story with QJM should suffice foryour needs:http://hadoop.apache.org/docs/r2.3.0/hadoop-yarn/hadoop-yarn-site/HDFSHighAvailabilityWithNFS.ht...
   Author: Andrew Wang, 2014-09-09, 23:04
[HDFS-7004] Update KeyProvider instantiation to create by URI - HDFS - [issue]
...See HADOOP-11054, would be good to update the NN/DFSClient to fetch via this method rather than depending on the URI path lookup....
http://issues.apache.org/jira/browse/HDFS-7004    Author: Andrew Wang, 2014-09-05, 19:42
[HDFS-6069] Quash stack traces when ACLs are disabled - HDFS - [issue]
...When ACLs are disabled, I get a lot of stack traces in the namenode log. It'd be nice to quash them for less spew.14/03/06 13:56:53 INFO ipc.Server: IPC Server handler 9 on 8020, call org.ap...
http://issues.apache.org/jira/browse/HDFS-6069    Author: Andrew Wang, 2014-09-04, 02:15
[HDFS-5936] MiniDFSCluster does not clean data left behind by SecondaryNameNode. - HDFS - [issue]
...Seen this happen on a few Jenkins precommit runs:java.io.IOException: Inconsistent checkpoint fields.LV = -52 namespaceID = 1980502516 cTime = 0 ; clusterId = testClusterID ; blockpoolId = B...
http://issues.apache.org/jira/browse/HDFS-5936    Author: Andrew Wang, 2014-09-04, 02:15
[HDFS-6987] Move CipherSuite xattr information up to the encryption zone root - HDFS - [issue]
...All files within a single EZ need to be encrypted with the same CipherSuite. Because of this, I think we can store the CipherSuite once in the EZ rather than on each file....
http://issues.apache.org/jira/browse/HDFS-6987    Author: Andrew Wang, 2014-09-02, 23:39
[HDFS-6971] Bounded staleness of EDEK caches on the NN - HDFS - [issue]
...The EDEK cache on the NN can hold onto keys after the admin has rolled the key. It'd be good to time-bound the caches, perhaps also providing an explicit "flush" command....
http://issues.apache.org/jira/browse/HDFS-6971    Author: Andrew Wang, 2014-09-02, 23:38
[HDFS-6891] Follow-on work for transparent data at rest encryption - HDFS - [issue]
...This is an umbrella JIRA to track remaining subtasks from HDFS-6134....
http://issues.apache.org/jira/browse/HDFS-6891    Author: Andrew Wang, 2014-08-29, 01:13
[HDFS-6970] Move startFile EDEK retries to the DFSClient - HDFS - [issue]
...Suresh Srinivas pointed out that holding on to an RPC handler while talking to the KMS is bad, since it can exhaust the available handlers. Let's avoid this by doing retries at the DFSClient...
http://issues.apache.org/jira/browse/HDFS-6970    Author: Andrew Wang, 2014-08-29, 01:13
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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