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Anoop Sam John
Stephen Yuan Jiang
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[HBASE-10060] Unsynchronized scanning
...HBASE-10015 has some lengthy discussion. The solution there ended up replacing synchronized with ReentrantLock, which - somewhat surprisingly - yielded a non-trivial improvement for tall tab...
, 2015-04-09, 06:46
[HBASE-13297] 0.98 and 1.0: Remove client side result size calculation
...As described in parent, this can lead to missed rows when the client and server calculate different size values.The patch here proposes a backwards compatible patch for 0.98 and 1.0.x.Parent...
, 2015-04-06, 21:46
[HBASE-13303] Fix size calculation of results on the region server
...One of the problems in the parent is due to different size calculation between client and server when HFilev3 is used.Since tags are never shipped to the client in a scan, we can have specia...
, 2015-03-28, 09:28
[HBASE-13109] Make better SEEK vs SKIP decisions during scanning
...I'm re-purposing this issue to add a heuristic as to when to SEEK and when to SKIP Cells. This has come up in various issues, and I think I have a way to finally fix this now. HBASE-9778, HB...
, 2015-03-26, 01:22
[HBASE-12976] Set default value for hbase.client.scanner.max.result.size
...Setting scanner caching is somewhat of a black art. It's hard to estimate ahead of time how large the result set will be.I propose we hbase.client.scanner.max.result.size to 2mb. That is goo...
, 2015-03-20, 05:14
[HBASE-13292] Undo parent from 0.98 and 1.0: setting hbase.client.scanner.max.result.size is considered harmful
...Defaulting hbase.client.scanner.max.result.size to 2mb will have to be undone from all branches....
, 2015-03-19, 22:08
[HBASE-13276] Fix incorrect condition for minimum block locality in 0.98
...0.98 only. Parent somehow was incorrect. One-liner to fix it.But it's critical as we perform potentially way more compactions now....
, 2015-03-19, 02:16
[HBASE-9117] Remove HTablePool and all HConnection pooling related APIs
...The recommended way is now: Create an HConnection: HConnectionManager.createConnection(...) Create a light HTable: HConnection.getTable(...) table.close() connection.close()All other API and...
, 2015-03-16, 20:28
[HBASE-9778] Add hint to ExplicitColumnTracker to avoid seeking
...The issue of slow seeking in ExplicitColumnTracker was brought up by Vladimir Rodionov on the dev list.My idea here is to avoid the seeking if we know that there aren't many versions to skip...
, 2015-03-04, 22:25
[HBASE-13094] Consider Filters that are evaluated before deletes and see delete markers
...That would be good for full control filtering of all cells, such as needed for some transaction implementations.Gary Helmling...
, 2015-02-25, 00:40
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