16012f93a6
'bypass' logic case by case Changes Coprocessor ObserverContext 'bypass' semantic. We flip the default so bypass is NOT supported on Observer invocations; only a couple of preXXX methods in RegionObserver allow it: e.g. preGet and prePut but not preFlush, etc. Everywhere else, we throw a DoesNotSupportBypassException if a Coprocessor Observer tries to invoke bypass. Master Observers can no longer stop or change move, split, assign, create table, etc. Ditto on complete, the mechanism that allowed a Coprocessor rule that all subsequent Coprocessors are skipped in an invocation chain; now, complete is only available to bypassable methods (and Coprocessors will get an exception if they try to 'complete' when it is not allowed). See javadoc for whether a Coprocessor Observer method supports 'bypass'. If no mention, 'bypass' is NOT supported. M hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.java Added passing of 'bypassable' (and 'completable') and default 'result' argument to the Operation constructors rather than pass the excecution engine as parameters. Makes it so can clean up RegionObserverHost and make the calling clearer regards what is going on. Methods that support 'bypass' must set this flag on the Observer. M hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java Refactoring in here is minor. A few methods that used support bypass no longer do so removed the check and the need of an if/else meant a left-shift in some code. M hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java Ditto M hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionCoprocessorHost.java In here label explicitly those methods that are bypassable. Some changes to make sure we call the corresponding execOperation. TestMasterObserver had a bunch of test of bypass method. All removed or disabled. TODO: What to do w/ the Scanner methods. |
||
|---|---|---|
| bin | ||
| conf | ||
| dev-support | ||
| hbase-annotations | ||
| hbase-archetypes | ||
| hbase-assembly | ||
| hbase-backup | ||
| hbase-build-configuration | ||
| hbase-checkstyle | ||
| hbase-client | ||
| hbase-common | ||
| hbase-endpoint | ||
| hbase-examples | ||
| hbase-external-blockcache | ||
| hbase-hadoop-compat | ||
| hbase-hadoop2-compat | ||
| hbase-http | ||
| hbase-it | ||
| hbase-mapreduce | ||
| hbase-metrics | ||
| hbase-metrics-api | ||
| hbase-native-client | ||
| hbase-prefix-tree | ||
| hbase-procedure | ||
| hbase-protocol | ||
| hbase-protocol-shaded | ||
| hbase-replication | ||
| hbase-resource-bundle | ||
| hbase-rest | ||
| hbase-rsgroup | ||
| hbase-server | ||
| hbase-shaded | ||
| hbase-shell | ||
| hbase-spark | ||
| hbase-spark-it | ||
| hbase-testing-util | ||
| hbase-thrift | ||
| src/main | ||
| .gitattributes | ||
| .gitignore | ||
| .pylintrc | ||
| CHANGES.txt | ||
| LICENSE.txt | ||
| NOTICE.txt | ||
| README.txt | ||
| pom.xml | ||
README.txt
Apache HBase [1] is an open-source, distributed, versioned, column-oriented store modeled after Google' Bigtable: A Distributed Storage System for Structured Data by Chang et al.[2] Just as Bigtable leverages the distributed data storage provided by the Google File System, HBase provides Bigtable-like capabilities on top of Apache Hadoop [3]. To get started using HBase, the full documentation for this release can be found under the doc/ directory that accompanies this README. Using a browser, open the docs/index.html to view the project home page (or browse to [1]). The hbase 'book' at http://hbase.apache.org/book.html has a 'quick start' section and is where you should being your exploration of the hbase project. The latest HBase can be downloaded from an Apache Mirror [4]. The source code can be found at [5] The HBase issue tracker is at [6] Apache HBase is made available under the Apache License, version 2.0 [7] The HBase mailing lists and archives are listed here [8]. The HBase distribution includes cryptographic software. See the export control notice here [9]. 1. http://hbase.apache.org 2. http://research.google.com/archive/bigtable.html 3. http://hadoop.apache.org 4. http://www.apache.org/dyn/closer.cgi/hbase/ 5. https://hbase.apache.org/source-repository.html 6. https://hbase.apache.org/issue-tracking.html 7. http://hbase.apache.org/license.html 8. http://hbase.apache.org/mail-lists.html 9. https://hbase.apache.org/export_control.html