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[HBASE-10935] support snapshot policy where flush memstore can be skipped to prevent production cluster freeze - HBase - [issue]
...We are using snapshot feature to do HBase disaster recovery. We will do snapshot in our production cluster periodically. The current flush snapshot policy require all regions of the table to...
http://issues.apache.org/jira/browse/HBASE-10935    Author: Tianying Chang, 2014-07-11, 07:26
[expand - 8 more] - export snapshot fail sometime due to LeaseExpiredException - HBase - [mail # dev]
...Hi,When I export large table with 460+ regions, I saw the exportSnapshot jobfail sometime (not all the time). The error of the map task is below: But Iverified the file highlighted below, it...
   Author: Tianying Chang, 2014-04-30, 16:21
[expand - 2 more] - Will BloomFilter still be cached if setCacheBlocks(false) per Get()? - HBase - [mail # dev]
...Hi,We have a use case where some data are mostly random read, so it pollutedcache and caused big GC. It is better to turn off the block cache for thosedata. So we are going to call setCacheB...
   Author: Tianying Chang, 2014-04-16, 23:41
[expand - 3 more] - no-flush based snapshot policy? - HBase - [mail # dev]
...Hi,I need a new snapshot policy which sits in between the disabled and flushedversion. So, basically:I cannot disable the table, but I also don't need the snapshot to be that"consistent" whe...
   Author: Tianying Chang, 2014-03-25, 21:09
[expand - 4 more] - WALPlayer? - HBase - [mail # user]
...Hi, folksI want to try the WALPlayer. But it complains not found. Am I running itthe wrong way?ThanksTian-Yinghadoop jar /tmp/hbase-0.94.17-SNAPSHOT.jar WALPlayerUnknown program 'WALPlayer' ...
   Author: Tianying Chang, 2014-02-07, 05:53
is hbase-6580 in 94.7? - HBase - [mail # user]
...Hi,I trying to use  Hconnection.getTable() instead of HTablePool since it isbeing deprecated. But we are using HBase 94.7 in our production. Seems itis only after 94.11?  https://i...
   Author: Tianying Chang, 2014-01-27, 17:58
[HBASE-8836] Separate reader and writer thread pool in RegionServer, so that write throughput will not be impacted when the read load is very high - HBase - [issue]
...We found that when the read load on a specific RS is high, the write throughput also get impacted dramatically, and even cause write data loss sometimes. We want to prioritize the write by p...
http://issues.apache.org/jira/browse/HBASE-8836    Author: Tianying Chang, 2013-10-28, 17:09
[HBASE-7896] make rename_table working in 92/94 - HBase - [issue]
...The rename_table function is very useful for our customers. However, rename_table.rb does not work for 92/94. It has several bugs. It will be useful to fix them so that users can solve their...
http://issues.apache.org/jira/browse/HBASE-7896    Author: Tianying Chang, 2013-05-23, 18:35
[HBASE-7882] move region level metrics readReqeustCount and writeRequestCount to Metric 2 - HBase - [issue]
...HBASE-7818 is for 94. Following the refactor of HBASE-6410, I need to refactor the 94 patch of HBASE-7818 against metric 2. Patch for 96 will be very different from 94....
http://issues.apache.org/jira/browse/HBASE-7882    Author: Tianying Chang, 2013-04-02, 20:35
[HBASE-7818] add region level metrics readReqeustCount and writeRequestCount - HBase - [issue]
...Request rate at region server level can help identify the hot region server. But it will be good if we can further identify the hot regions on that region server. That way, we can easily fin...
http://issues.apache.org/jira/browse/HBASE-7818    Author: Tianying Chang, 2013-03-23, 04:53
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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