Enis Soztutar created HBASE-17106:
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Summary: Wrap arguments to Coprocessor method invocations in
Context objects
Key: HBASE-17106
URL: https://issues.apache.org/jira/browse/HBASE-17106
Project: HBase
Issue Type: New Feature
Reporter: Enis Soztutar
Fix For: 2.0.0
As discussed in various contexts (and recently in
https://issues.apache.org/jira/browse/HBASE-16962?focusedCommentId=15648512&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15648512)
we have a very large number of deprecated methods in RegionObserver (and
possibly others) which are due to the fact that the method signatures like:
{code}
@Deprecated
InternalScanner preFlushScannerOpen(final
ObserverContext<RegionCoprocessorEnvironment> c,
final Store store, final KeyValueScanner memstoreScanner, final
InternalScanner s)
throws IOException;
{code}
depend inherently on the internal method signatures which gets changed
frequently.
We should look into wrapping the method arguments for such declerations in the
RegionObserver interface so that we can evolve and add new arguments without
breaking existing coprocessors between minor versions.
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