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This patch adds mirroring of table state out to zookeeper. HBase-1.x clients look for table state in zookeeper, not in hbase:meta where hbase-2.x maintains table state. The patch also moves and refactors the 'migration' code that was put in place by HBASE-13032. D hbase-client/src/main/java/org/apache/hadoop/hbase/CoordinatedStateException.java Unused. M hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java Move table state migration code from Master startup out to TableStateManager where it belongs. Also start MirroringTableStateManager dependent on config. A hbase-server/src/main/java/org/apache/hadoop/hbase/master/MirroringTableStateManager.java M hbase-server/src/main/java/org/apache/hadoop/hbase/master/TableStateManager.java Move migration from zookeeper of table state in here. Also plumb in mechanism so subclass can get a chance to look at table state as we do the startup fixup full-table scan of meta. M hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/AssignmentManager.java Bug-fix. Now we create regions in CLOSED state but we fail to check table state; were presuming table always enabled. Meant on startup there'd be an unassigned region that never got assigned. A hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestMirroringTableStateManager.java Test migration and mirroring.
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