da3e06afab
Add backoff when stuck in RegionTransitionProcedure, the subclass of AssignProcedure and UnassignProcedure. Can happen when we go to transition but the current Region state is not what we expect. M hbase-procedure/src/main/java/org/apache/hadoop/hbase/procedure2/Procedure.java Add doc on being able to suspend and wait on a timeout. M hbase-protocol-shaded/src/main/protobuf/MasterProcedure.proto Add 'attempt' counter so we can do backoff when we get stuck. M hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/AssignProcedure.java M hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/UnassignProcedure.java Add persistence of new 'attempt' counter M hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/RegionTransitionProcedure.java Doc data members that are persisted by subclasses given this is 'odd'. Add a counter for 'attempts' used when 'stuck' to implement backoff. Add suspend with timeout when 'stuck'. Add callback when timeout is exhausted which does wakeup of this procedure. A hbase-server/src/test/java/org/apache/hadoop/hbase/master/assignment/TestUnexpectedStateException.java Test of backoff. |
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| bin | ||
| conf | ||
| dev-support | ||
| hbase-annotations | ||
| hbase-archetypes | ||
| hbase-assembly | ||
| hbase-build-configuration | ||
| hbase-build-support | ||
| 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-procedure | ||
| hbase-protocol | ||
| hbase-protocol-shaded | ||
| hbase-replication | ||
| hbase-resource-bundle | ||
| hbase-rest | ||
| hbase-rsgroup | ||
| hbase-server | ||
| hbase-shaded | ||
| hbase-shell | ||
| hbase-testing-util | ||
| hbase-thrift | ||
| hbase-zookeeper | ||
| 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