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[expand - 2 more] - Re: Changing it so we do NOT archive hfiles by default - HBase - [mail # dev]
...Even with the manifest feature, it is still inefficient to iterate overevery hfile in the archive and check with the namenode to see if there is anew snapshot manifest that may reference tha...
   Author: Dave Latham, 2014-11-24, 17:52
[HBASE-11496] HBASE-9745 broke cygwin CLASSPATH translation - HBase - [issue]
...HBASE-9745 put HBASE_CLASSPATH back at the end of the Java classpath, but also moved it to happen after the cygwin translation which broke it....
http://issues.apache.org/jira/browse/HBASE-11496    Author: Dave Latham, 2014-08-09, 05:40
[HBASE-10089] Metrics intern table names cause eventual permgen OOM in 0.94 - HBase - [issue]
...As part of the metrics system introduced in HBASE-4768 there are two places that hbase uses String interning ( SchemaConfigured and SchemaMetrics ).  This includes interning table names...
http://issues.apache.org/jira/browse/HBASE-10089    Author: Dave Latham, 2014-05-30, 18:23
[HBASE-9931] Optional setBatch for CopyTable to copy large rows in batches - HBase - [issue]
...We've had CopyTable jobs fail because a small number of rows are wide enough to not fit into memory.  If we could specify the batch size for CopyTable scans that shoud be able to break ...
http://issues.apache.org/jira/browse/HBASE-9931    Author: Dave Latham, 2013-12-04, 23:49
[HBASE-9888] HBase replicates edits written before the replication peer is created - HBase - [issue]
...When creating a new replication peer the ReplicationSourceManager enqueues the currently open HLog to the ReplicationSource to ship to the destination cluster.  The ReplicationSource st...
http://issues.apache.org/jira/browse/HBASE-9888    Author: Dave Latham, 2013-11-06, 21:54
[expand - 1 more] - Re: HBase backup, recovery, replication et al - HBase - [mail # user]
...Primarily the link above, but also got comfortable with the source code after some bumps.  You may want to consider moving to a more recent version depending how much volume you're expe...
   Author: Dave Latham, 2013-10-17, 22:06
[HBASE-8877] Reentrant row locks - HBase - [issue]
...HBASE-8806 revealed performance problems with batch mutations failing to reacquire the same row locks.  It looks like HBASE-8806 will use a less intrusive change for 0.94 to have batch ...
http://issues.apache.org/jira/browse/HBASE-8877    Author: Dave Latham, 2013-10-15, 05:46
Re: Limit number of columns in column family - HBase - [mail # user]
...What about having all columns in the column family use the same qualifier and then setting the max versions for that column family to limit it? http://hbase.apache.org/book.html#schema.versi...
   Author: Dave Latham, 2013-09-23, 21:32
Re: Tables gets Major Compacted even if they haven't changed - HBase - [mail # user]
...Major compactions can still be useful to improve locality - could we add a condition to check for that too?   On Mon, Sep 9, 2013 at 10:41 PM, lars hofhansl  wrote:  ...
   Author: Dave Latham, 2013-09-10, 18:11
[HBASE-9208] ReplicationLogCleaner slow at large scale - HBase - [issue]
...At a large scale the ReplicationLogCleaner fails to clean up .oldlogs as fast as the cluster is producing them.  For each old HLog file that has been replicated and should be deleted th...
http://issues.apache.org/jira/browse/HBASE-9208    Author: Dave Latham, 2013-08-29, 17:48
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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