Anoop Sam John
Stephen Yuan Jiang
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[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
[HBASE-13333] Renew Scanner Lease without advancing the RegionScanner
...We have a usecase (for Phoenix) where we want to let the server know that the client is still around. Like a client-side heartbeat.Doing a full heartbeat is complicated, but we could add the...
, 2015-07-04, 22:35
[HBASE-12091] Optionally ignore edits for dropped tables for replication.
...We just ran into a scenario where we dropped a table from both the source and the sink, but the source still has outstanding edits that now it could not get rid of. Now all replication is ba...
, 2015-07-04, 01:13
[HBASE-12311] Version stats in HFiles?
...In HBASE-9778 I basically punted the decision on whether doing repeated scanner.next() called instead of the issueing (re)seeks to the user.I think we can do better.One way do that is mainta...
, 2015-07-04, 01:06
[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
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