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[expand - 2 more] - Re: HBase Types: Explicit Null Support - HBase - [mail # user]
...Ah, I didn't even realize sql allowed null key parts.  Maybe a goal of the interfaces should be to provide first-class support for custom user types in addition to the standard ones inc...
   Author: Matt Corgan, 2013-04-02, 06:17
Eliminating duplicate values - HBase - [mail # user]
...I have a few use cases where I'd like to leverage HBase's high write throughput to blindly write lots of data even if most of it hasn't changed since the last write.  I want to retain M...
   Author: Matt Corgan, 2013-03-03, 03:42
[HBASE-7660] Remove HFileV1 code - HBase - [issue]
...HFileV1 should be removed from the regionserver because it is somewhat of a drag on development for working on the lower level read paths.  It's an impediment to cleaning up the Store c...
http://issues.apache.org/jira/browse/HBASE-7660    Author: Matt Corgan, 2013-02-26, 05:50
Re: Guidance for running MR jobs against trunk/0.95 - HBase - [mail # dev]
...Right now only used at runtime on the server.  I guess we need a way to prevent instantiation on the client.  If we allowed it as one of the client RPC encodings, then client would...
   Author: Matt Corgan, 2013-02-26, 00:01
Re: org.apache.hadoop.hbase vs org.apache.hbase namespace - HBase - [mail # dev]
...I just started putting it there a year ago because i thought we were trying to move out of the hadoop package after becoming a top level project.  Seems like there hasn't been much of a...
   Author: Matt Corgan, 2013-02-07, 17:33
client Result object and other client interfaces - HBase - [mail # dev]
...Mainly for Stack as he's working on RPC stuff.  I'm just curious what you have in mind for the user-facing client interfaces.  Do you plan to keep the Result object the same for no...
   Author: Matt Corgan, 2013-02-07, 07:39
[HBASE-6907] KeyValue equals and compareTo methods should match - HBase - [issue]
...KeyValue.KVComparator includes the memstoreTS when comparing, however the KeyValue.equals() method ignores the memstoreTS.The Comparator interface has always specified that comparator return...
http://issues.apache.org/jira/browse/HBASE-6907    Author: Matt Corgan, 2013-01-22, 00:58
[expand - 3 more] - Re: InternalScanner next(..) methods - HBase - [mail # dev]
...I think you are right but are forgetting about the value part of the cell.  The other encoders are somewhere between the prefix-tree and the original KeyValue format.  They concate...
   Author: Matt Corgan, 2012-12-11, 08:08
[expand - 11 more] - Re: infinite loop of RS_ZK_REGION_SPLIT on .94.2 - HBase - [mail # dev]
...I dug back further to find the origin of e11e8b030897d6e5b973f8fe892e0eb2 to see if it had previous problems that left ZK in a bad state.  Here's the regionserver and master logs: http:...
   Author: Matt Corgan, 2012-11-06, 23:36
[expand - 2 more] - Re: more regionservers does not improve performance - HBase - [mail # user]
...You can change table settings in the shell.  To start the shell:  HBASE_HOME/bin/hbase shell  To see some examples for the "alter" command, just type it without any arguments....
   Author: Matt Corgan, 2012-10-15, 17:23
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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