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[HBASE-17786] Create LoadBalancer perf-tests (test balancer algorithm decoupled from workload)
...(Below is a quote from Matteo Bertozzi taken from an internal issue that I'm moving out here)Add perf tools and keep monitored balancer performance (a BalancerPE-type thing).Most of the bala...
, 2017-03-14, 20:05
[HBASE-17772] IntegrationTestRSGroup won't run
...ITRSGroup doesn't work. Fix....
, 2017-03-11, 05:18
[HBASE-15716] HRegion#RegionScannerImpl scannerReadPoints synchronization constrains random read
...Here is a Lars Hofhansl special.When we construct the region scanner, we get our read point and then store it with the scanner instance in a Region scoped CSLM. This is done under a synchron...
, 2017-03-09, 20:03
[HBASE-17738] BucketCache startup is slow
...If you set bucketcache size at 64G say and then start hbase, it takes a long time. Can we do the allocations in parallel and not inline with the server startup?Related, prefetching on a buck...
, 2017-03-08, 05:39
[HBASE-15248] BLOCKSIZE 4k should result in 4096 bytes on disk; i.e. fit inside a BucketCache 'block' of 4k
...Chatting w/ a gentleman named Daniel Pol who is messing w/ bucketcache, he wants blocks to be the size specified in the configuration and no bigger. His hardware set ups fetches pages of 4k ...
, 2017-03-07, 04:44
[HBASE-15457] [performance] Save-a-seek; hint HFileReader when Scan is a "Get" Scan
...Have the Scan hint the lower-level Reader when its a 'Get' Scan. Reader is currently doing checks for EOF and when time to load next block on each next invocation. Seems easy enough to retur...
, 2017-03-06, 23:18
[HBASE-14090] Redo FS layout; let go of tables/regions/stores directory hierarchy in DFS
...Our layout as is won't work if 1M regions; e.g. HDFS will fall over if directories of hundreds of thousands of files. HBASE-13991 (Humongous Tables) would address this specific directory pro...
, 2017-03-06, 05:31
[HBASE-17733] Undo registering regionservers in zk with ephemeral nodes; its more trouble than its worth
...Elsewhere, we are undoing the use of ZK (replication current WAL offset, regions-in-transition, etc).I have another case where using ZK, while convenient (call-backs), has holes.The scenario...
, 2017-03-04, 17:43
[HBASE-17724] Include a list of all metrics in the refguide
...It keeps coming up that we are missing a list of all metrics in our documentation.How could we get full list? Metrics are published on JMX. A jsp page scrapes our published mbeans to draw a ...
, 2017-03-03, 20:35
[HBASE-13753] HBASE-9593 made it so we register in zk with RS hostname rather than name master gave us
...See http://mail-archives.apache.org/mod_mbox/hbase-user/201505.mbox/%[EMAIL PROTECTED]%3E for a report on the regression.Look at restoring how 0.94 used to work where we used the hostname th...
, 2017-03-02, 07:21
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