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[HBASE-8228] Investigate time taken to snapshot memstore - HBase - [issue]
...Snapshotting memstores is normally quick. But, sometimes it seems to take long. This JIRA is to track the investigation and fix to improve the outliers....
http://issues.apache.org/jira/browse/HBASE-8228    Author: Amitanand Aiyer, 2013-06-26, 23:32
[HBASE-8562] Close readers after compaction - HBase - [issue]
...StoreFileScanners open readers to read the store file. However, these readers are not closed upon StoreFileScanner.close().This should be closed at the end of the compaction....
http://issues.apache.org/jira/browse/HBASE-8562    Author: Amitanand Aiyer, 2013-05-20, 05:50
[HBASE-8524] HBaseClient gets stuck waiting for a response - HBase - [issue]
...We've seen in a couple of replication use cases that the client thread keeps waiting for a response but waits for ever, as it does not get a response.The client waits indefintely even if a r...
http://issues.apache.org/jira/browse/HBASE-8524    Author: Amitanand Aiyer, 2013-05-10, 19:22
[HBASE-6680] Allow configurable/multiple split log threads per RS. - HBase - [issue]
...For rack failure case, it seems like there are multiple batches of split logs to be processed. Allow a configurable number of split log worker per RS, so that we split more logs quickly....
http://issues.apache.org/jira/browse/HBASE-6680    Author: Amitanand Aiyer, 2013-04-10, 08:31
[HBASE-8292] Online configuration updates - HBase - [issue]
...Currently, any changes to the configuration options: compaction tuning/etc. requires that we restart the regionserver.Perhaps, some of the configs can be updated on the fly, without having t...
http://issues.apache.org/jira/browse/HBASE-8292    Author: Amitanand Aiyer, 2013-04-08, 19:07
[HBASE-8281] Unassigned regions: dropped messages from Master to RS - HBase - [issue]
...We have seen a couple of scenarios where transcient network issue between the RS and Master results in regions being unassigned (and staying unassigned) until someone intervenes manually wit...
http://issues.apache.org/jira/browse/HBASE-8281    Author: Amitanand Aiyer, 2013-04-05, 18:43
[HBASE-8216] Be able to differentiate Power failures from Rack switch reboot - HBase - [issue]
...The master in 0.89-fb waits for 5-6 mins to check if RS'es become accessible; when it sees a co-related failure such as a rack-switch-reboot.The rationale behind doing this is that it is not...
http://issues.apache.org/jira/browse/HBASE-8216    Author: Amitanand Aiyer, 2013-04-05, 18:33
[HBASE-8227] Investigate outliers in 0.89-fb - HBase - [issue]
...Umbrella task to investigate outliers in the get and put path....
http://issues.apache.org/jira/browse/HBASE-8227    Author: Amitanand Aiyer, 2013-03-29, 23:35
[HBASE-8221] Ensure that we flush/close Regions before the RS stops answering client requests. - HBase - [issue]
...Currently, the RS stops responding as soon as the stop is requested. We then go in and close all regions in a 2-flush mechanism.Ensure that RS will first close the regions, and then stop tak...
http://issues.apache.org/jira/browse/HBASE-8221    Author: Amitanand Aiyer, 2013-03-29, 18:40
[HBASE-6374] [89-fb] Unify the multi-put/get/delete path so there is only one call to each RS, instead of one call per region - HBase - [issue]
...This is a feature similar to the batch feature in trunk. We have optimisation for the put path where we batch puts by the regionserver, but for gets and deletes we do batching only per hregi...
http://issues.apache.org/jira/browse/HBASE-6374    Author: Amitanand Aiyer, 2013-03-25, 21:29
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