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[HBASE-4462] Properly treating SocketTimeoutException - HBase - [issue]
...SocketTimeoutException is currently treated like any IOE inside of HCM.getRegionServerWithRetries and I think this is a problem. This method should only do retries in cases where we are pret...
http://issues.apache.org/jira/browse/HBASE-4462    Author: Jean-Daniel Cryans, 2015-04-21, 01:48
[HBASE-5161] Compaction algorithm should prioritize reference files - HBase - [issue]
...I got myself into a state where my table was un-splittable as long as the insert load was coming in. Emergency flushes because of the low memory barrier don't check the number of store files...
http://issues.apache.org/jira/browse/HBASE-5161    Author: Jean-Daniel Cryans, 2015-04-11, 02:33
[HBASE-2888] Review all our metrics - HBase - [issue]
...HBase publishes a bunch of metrics, some useful some wasteful, that should be improved to deliver a better ops experience. Examples: Block cache hit ratio converges at some point and stops m...
http://issues.apache.org/jira/browse/HBASE-2888    Author: Jean-Daniel Cryans, 2015-02-19, 19:03
[HBASE-2807] Create a helper method to compare family from KV - HBase - [issue]
...From Stack's review in HBASE-2223:It'd be good if we didn't have to create this byte [] per edit.  I should reinstitute the comparator I had that took KVs but only compared family porti...
http://issues.apache.org/jira/browse/HBASE-2807    Author: Jean-Daniel Cryans, 2015-02-09, 06:18
[HBASE-2506] Too easy to OOME a RS - HBase - [issue]
...Testing a cluster with 1GB heap, I found that we are letting the region servers kill themselves too easily when scanning using pre-fetching. To reproduce, get 10-20M rows using PE and run a ...
http://issues.apache.org/jira/browse/HBASE-2506    Author: Jean-Daniel Cryans, 2015-02-09, 06:08
[HBASE-5162] Basic client pushback mechanism - HBase - [issue]
...The current blocking we do when we are close to some limits (memstores over the multiplier factor, too many store files, global memstore memory) is bad, too coarse and confusing. After hitti...
http://issues.apache.org/jira/browse/HBASE-5162    Author: Jean-Daniel Cryans, 2015-02-07, 20:36
[HBASE-7541] Convert all tests that use HBaseTestingUtility.createMultiRegions to HBA.createTable - HBase - [issue]
...Like I discussed in HBASE-7534, HBaseTestingUtility.createMultiRegions should disappear and not come back. There's about 25 different places in the code that rely on it that need to be chang...
http://issues.apache.org/jira/browse/HBASE-7541    Author: Jean-Daniel Cryans, 2015-01-26, 23:46
[HBASE-8275] Tool to test binary compatibility - HBase - [issue]
...Stack and I were discussing of ways to make binary compatibility easier to test than doing it completely by hand.One idea would be to have a tool that uses reflection to generate code that c...
http://issues.apache.org/jira/browse/HBASE-8275    Author: Jean-Daniel Cryans, 2015-01-12, 00:13
[HBASE-6128] Use weights instead of block counts in DoubleBlockCache with CacheBuilder - HBase - [issue]
...Thanks to HBASE-5739 we can now specify a max weight instead of a maximum number of blocks in the DoubleBlockCache. This will give a more accurate control over its memory usage....
http://issues.apache.org/jira/browse/HBASE-6128    Author: Jean-Daniel Cryans, 2015-01-08, 11:25
[HBASE-4306] Race between CatalogJanitor and LoadBalancer - HBase - [issue]
...It is possible for the LoadBalancer to try to assign an offline/split region while it is waiting to be CatalogJanitor'ed. It goes like this:2011-08-25 00:32:07,137 INFO org.apache.hadoop.hba...
http://issues.apache.org/jira/browse/HBASE-4306    Author: Jean-Daniel Cryans, 2014-12-24, 19:50
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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