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[HBASE-9826] KeyValue should guard itself against corruptions - HBase - [issue]
...We have seen a case where a corrupted KV was causing a flush to fail repeatedly.KV seems to have some sanity checks when it is created. But, not sure how the corrupted KV got in.We could add...
http://issues.apache.org/jira/browse/HBASE-9826    Author: Amitanand Aiyer, 2013-10-23, 06:55
[HBASE-8476] locateRegionInMeta should check the cache before doing the prefetch - HBase - [issue]
...locateRegionInMeta uses a regionLockObject to synchronize all accesses to prefetch the RegionCache.         synchronized (regionLockObject) {     &nbs...
http://issues.apache.org/jira/browse/HBASE-8476    Author: Amitanand Aiyer, 2013-09-23, 20:28
[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
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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