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Anoop Sam John
Stephen Yuan Jiang
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[HBASE-14418] Make better SEEK vs SKIP decision with seek hints.
...Continuation of parent.We can also do this optimization for seek hints. This would allow filters and coprocessors to be more liberal with seek hints, as seeking when unnecessary is less of p...
, 2015-09-13, 00:41
[HBASE-14364] hlog_roll and compact_rs broken in shell
...Just noticed that both hlog_roll and compact_rs are broken in shell (at least in 0.98).The hlog_roll broken 3 times: (1) calls admin.rollWALWriter, which no longer exists, and (2) tries to p...
, 2015-09-05, 04:41
[HBASE-5311] Allow inmemory Memstore compactions
...Just like we periodically compact the StoreFiles we should also periodically compact the MemStore.During these compactions we eliminate deleted cells, expired cells, cells to removed because...
, 2015-08-28, 21:10
[HBASE-13919] Rationalize Client Timeout
...There are current many setting that influence how/when an HBase client times out.This is hard to configure, hard to understand, and badly documented.Instead there should as few tweaks as nee...
, 2015-08-23, 02:33
[HBASE-13497] Remove MVCC stamps from HFile when that is safe
...See discussion in HBASE-13389.The optimization was initially put in with HBASE-8166, HBASE-12600 undoes it, this will partially restores it.Instead of checking the MVCC readpoints against th...
, 2015-07-30, 18:18
[HBASE-12945] Port: New master API to track major compaction completion to 0.98
, 2015-07-18, 11:08
[HBASE-13159] Consider RangeReferenceFiles with transformations
...Currently we have References used by HalfStoreReaders and HFileLinks.For various use cases we have here we have need for a RangeReferences with simple transformation of the keys.That would a...
, 2015-07-15, 18:04
[HBASE-13352] Add hbase.import.version to Import usage.
...We just tried to export some (small amount of) data out of an 0.94 cluster to 0.98 cluster. We used Export/Import for that.By default we found that the import M/R job correctly reports the n...
, 2015-07-15, 06:13
[HBASE-13703] ReplicateContext should not be a member of ReplicationSource
...The ReplicateContext object is created once per ReplicationSource and then reused when we have something to ship to the sinks.This is a misguided optimization. ReplicateContext is very light...
, 2015-07-04, 22:39
[HBASE-13618] ReplicationSource is too eager to remove sinks
...Looking at the replication for some other reason I noticed that the replication source might be a bit too eager to remove sinks from the list of valid sinks.The current logic allows a sink t...
, 2015-07-04, 22:39
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