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[HBASE-12311] Version stats in HFiles? - HBase - [issue]
...In HBASE-9778 I basically punted the decision on whether doing repeated scanner.next() called instead of the issueing (re)seeks to the user.I think we can do better.One way do that is mainta...
http://issues.apache.org/jira/browse/HBASE-12311    Author: Lars Hofhansl, 2014-11-07, 05:24
[HBASE-12417] Scan copy constructor does not retain small attribute - HBase - [issue]
...See Scan(Scan), the small member is not copied over....
http://issues.apache.org/jira/browse/HBASE-12417    Author: Lars Hofhansl, 2014-11-04, 03:24
[HBASE-12303] Seek to next row after family delete markers - HBase - [issue]
...Currently we seek to the next column when we encounter a family delete marker.I think we safely seek the current store to next row.We ran into a scenario with very slow scans after a lot of ...
http://issues.apache.org/jira/browse/HBASE-12303    Author: Lars Hofhansl, 2014-10-21, 19:10
[HBASE-11876] RegionScanner.nextRaw(...) should not update metrics - HBase - [issue]
...I added the RegionScanner.nextRaw(...) to allow "smart" client to avoid some of the default work that HBase is doing, such as {start|stop}RegionOperation and synchronized(scanner) for each r...
http://issues.apache.org/jira/browse/HBASE-11876    Author: Lars Hofhansl, 2014-09-03, 20:40
[HBASE-11811] Use binary search for seeking into a block - HBase - [issue]
...Currently upon every seek (including Gets) we need to linearly look through the block from the beginning until we find the Cell we are looking for.It should be possible to build a simple cac...
http://issues.apache.org/jira/browse/HBASE-11811    Author: Lars Hofhansl, 2014-08-29, 08:05
[HBASE-9746] RegionServer can't start when replication tries to replicate to an unknown host - HBase - [issue]
...Just ran into this:13/10/11 00:37:02 [regionserver60020] WARN  zookeeper.ZKConfig(204): java.net.UnknownHostException: <old-host>: Name or service not known at java.net.Inet6Addre...
http://issues.apache.org/jira/browse/HBASE-9746    Author: Lars Hofhansl, 2014-08-26, 21:58
[HBASE-10145] Table creation should proceed in the presence of a stale znode - HBase - [issue]
...HBASE-7600 fixed a race condition where concurrent attempts to create the same table could succeed.An unfortunate side effect is that it is now impossible to create a table as long as the ta...
http://issues.apache.org/jira/browse/HBASE-10145    Author: Lars Hofhansl, 2014-08-25, 18:59
[HBASE-11778] Scale timestamps by 1000 - HBase - [issue]
...The KV timestamps are used for various reasons: ordering of KVs resolving conflicts enforce TTLCurrently we assume that the timestamps have a resolution of 1ms, and because of that we made t...
http://issues.apache.org/jira/browse/HBASE-11778    Author: Lars Hofhansl, 2014-08-20, 18:40
[HBASE-11767] [0.94] Unnecessary garbage produced by schema metrics during scanning - HBase - [issue]
...Near the end of StoreScanner.next(...) we find this gem:    } finally {      if (cumulativeMetric > 0 && metric != null) {     &n...
http://issues.apache.org/jira/browse/HBASE-11767    Author: Lars Hofhansl, 2014-08-17, 07:27
[HBASE-9778] Add hint to ExplicitColumnTracker to avoid seeking - HBase - [issue]
...The issue of slow seeking in ExplicitColumnTracker was brought up by Vladimir Rodionov on the dev list.My idea here is to avoid the seeking if we know that there aren't many versions to skip...
http://issues.apache.org/jira/browse/HBASE-9778    Author: Lars Hofhansl, 2014-08-14, 21:20
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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