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Anoop Sam John
Stephen Yuan Jiang
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[HBASE-12765] SplitTransaction creates too many threads (potentially)
...In splitStoreFiles(...) we create a new thread pool with as many threads as there are files to split.We should be able to do better. During times of very heavy write loads there might be a l...
, 2015-07-04, 01:04
[HBASE-11811] Use binary search for seeking into a block
...Currently upon every seek (including Gets) we need to linearly look through the block from the beginning until we find the Cell we are looking for.It should be possible to build a simple cac...
, 2015-06-27, 07:03
[HBASE-12859] New master API to track major compaction completion
...In various scenarios it is helpful to know a guaranteed timestamp up to which all data in a table was major compacted.We can do that keeping a major compaction timestamp in META.A client the...
, 2015-06-03, 16:29
[HBASE-13751] Refactoring replication WAL reading logic as WAL Iterator
...The current replication code is all over the place.A simple refactoring that we could consider is to factor out the part that reads from the WALs. Could be a simple iterator interface with o...
, 2015-05-23, 01:32
[HBASE-13629] Add to 1.0: HBASE-12957 region_mover#isSuccessfulScan may be extremely slow on region with lots of expired data
...Parent introduced a typo.scan.setFilter(FilterList.new(FirstKeyOnlyFilter.new(),InclusiveStopFilter().new(r.getStartKey())))should bescan.setFilter(FilterList.new(FirstKeyOnlyFilter.new(),In...
, 2015-05-06, 06:33
[HBASE-10247] Client promises about timestamps
...This is to start a discussion about timestamp promises declared per table of CF.For example if a client promises only monotonically increasing timestamps (or no custom set timestamps) and VE...
, 2015-04-30, 17:26
[HBASE-7320] Remove KeyValue.getBuffer()
...In many places this is simple task of just replacing the method name.There, however, quite a few places where we assume that: the entire KV is backed by a single byte array the KVs key porti...
, 2015-04-28, 03:28
[HBASE-13494] 0.98: Remove remove(K, V) from type PoolMap<K,V>
...JDK7 will be EOL'ed this month. 0.98 should build with JDK8.Andrew Purtell +1'd this in parent.Unless I hear objections I'll commit this later today....
, 2015-04-18, 10:10
[HBASE-13362] Set max result size from client only (like scanner caching).
...With the recent problems we've been seeing client/server result size mismatch, I was thinking: Why was this not a problem with scanner caching?There are two reasons: number of rows is easy t...
, 2015-04-09, 11:20
[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
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