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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-18431) Mitigate compatibility concerns between branch-1.3 and branch-1.4
Date Fri, 21 Jul 2017 23:46:02 GMT
Andrew Purtell created HBASE-18431:
--------------------------------------

             Summary: Mitigate compatibility concerns between branch-1.3 and branch-1.4
                 Key: HBASE-18431
                 URL: https://issues.apache.org/jira/browse/HBASE-18431
             Project: HBase
          Issue Type: Bug
            Reporter: Andrew Purtell
             Fix For: 1.4.0


There are compatibility concerns with branch-1.4. 

{noformat}
Library Name	HBase
Version #1	1.3.1
Version #2	1.4.0-SNAPSHOT
Subject	Binary Compatibility

Compatibility - 89.9%

Added Methods - 305
Removed Methods - 105
Problems with Data Types
	High - 23
	Medium - 9
	Low - 21
{noformat}

{noformat}
Library Name	HBase
Version #1	1.3.1
Version #2	1.4.0-SNAPSHOT
Subject	Source Compatibility

Compatibility- 86.5%

Added Methods - 305
Removed Methods - 105
Problems with Data Types
	High - 88
	Medium - 0
	Low - 0
Other Changes in Data Types	 - 25
{noformat}

This report includes HBASE-15816 which hasn't been committed yet. Otherwise it's current.

I'm not generally concerned with added methods. 

The Public/Evolving interface Admin has some signature changes equating to removed methods.
I don't think this is allowed in a minor release.

\\
* Abstract method Admin.isSnapshotFinished ( HBaseProtos.SnapshotDescription ) has been removed
from Admin.
*  Abstract method Admin.snapshot ( String, TableName, HBaseProtos.SnapshotDescription.Type
) has been removed from Admin.
* Abstract method Admin.snapshot ( HBaseProtos.SnapshotDescription ) has been removed from
Admin.
*  Abstract method Admin.takeSnapshotAsync ( HBaseProtos.SnapshotDescription ) has been removed
from Admin.


The LimitedPrivate(CONFIG) interface AsyncRpcClient has been removed. This change is debatable
but I think we can allow it.

\\
* AsyncRpcClient has been removed


The Public/Evolving class FastLongHistogram has been removed. I don't believe this change
is allowed in a minor release.

\\
* FastLongHistogram has been removed


Method signatures in LimitedPrivate(COPROC) interfaces MasterObserver and RegionObserver have
changed, equating to removed methods. These changes should be mitigated with compatibility
shims:

\\
* Abstract method MasterObserver.postCloneSnapshot ( ObserverContext<MasterCoprocessorEnvironment>,
HBaseProtos.SnapshotDescription, HTableDescriptor ) has been removed from MasterObserver.
* Abstract method MasterObserver.postDeleteSnapshot ( ObserverContext<MasterCoprocessorEnvironment>,
HBaseProtos.SnapshotDescription ) has been removed from MasterObserver.
* Abstract method MasterObserver.postListSnapshot ( ObserverContext<MasterCoprocessorEnvironment>,
HBaseProtos.SnapshotDescription ) has been removed from MasterObserver.
* Abstract method MasterObserver.postRestoreSnapshot ( ObserverContext<MasterCoprocessorEnvironment>,
HBaseProtos.SnapshotDescription, HTableDescriptor ) has been removed from MasterObserver.
* Abstract method MasterObserver.postSnapshot ( ObserverContext<MasterCoprocessorEnvironment>,
HBaseProtos.SnapshotDescription, HTableDescriptor ) has been removed from MasterObserver.
* Abstract method MasterObserver.preCloneSnapshot ( ObserverContext<MasterCoprocessorEnvironment>,
HBaseProtos.SnapshotDescription, HTableDescriptor ) has been removed from MasterObserver.
* Abstract method MasterObserver.preDeleteSnapshot ( ObserverContext<MasterCoprocessorEnvironment>,
HBaseProtos.SnapshotDescription ) has been removed from MasterObserver.
* Abstract method MasterObserver.preListSnapshot ( ObserverContext<MasterCoprocessorEnvironment>,
HBaseProtos.SnapshotDescription ) has been removed from MasterObserver.
* Abstract method MasterObserver.preRestoreSnapshot ( ObserverContext<MasterCoprocessorEnvironment>,
HBaseProtos.SnapshotDescription, HTableDescriptor ) has been removed from MasterObserver.
* Abstract method MasterObserver.preSnapshot ( ObserverContext<MasterCoprocessorEnvironment>,
HBaseProtos.SnapshotDescription, HTableDescriptor ) has been removed from MasterObserver.
* Abstract method RegionObserver.postInstantiateDeleteTracker ( ObserverContext<RegionCoprocessorEnvironment>,
DeleteTracker ) has been removed from RegionObserver.


The LimitedPrivate(COPROC) interface Store has method signature changes equating to removed
methods. The changes are debatable. I am thinking we can allow them. Anyone implementing their
own Stores?

\\
* Abstract method Store.bulkLoadHFile ( String, long ) has been removed from Store.
* Abstract method Store.getScanners ( List<StoreFile>, boolean, boolean, boolean, boolean,
ScanQueryMatcher, byte[ ], byte[ ], long, boolean ) has been removed from Store.
* Abstract method Store.getScanners ( boolean, boolean, boolean, boolean, ScanQueryMatcher,
byte[ ], byte[ ], long ) has been removed from Store.
* Abstract method Store.upsert ( Iterable<Cell>, long ) has been removed from Store.




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