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Transactional and indexing extensions for hbase
hbase-trx/hbase-transactional-tableindexed
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This project is a transactional and indexing extension for hbase. Current status: Now working with HBase 0.90. Working Features: * Ability to create manage and query with pre-defined table indexes. * Ability to perform multiple HBase operations within serialized and atomic JTA transactions. Known limitations and issues: https://github.com/hbase-trx/hbase-transactional-tableindexed/issues Installation: Drop the jar in the classpath of your application Configuration: To enable the extension in hbase-site.xml: <property> <name>hbase.regionserver.class</name> <value>org.apache.hadoop.hbase.ipc.TransactionalRegionInterface</value> </property> <property> <name>hbase.regionserver.impl</name> <value>org.apache.hadoop.hbase.regionserver.transactional.TransactionalRegionServer</value> </property> <property> <name>hbase.hregion.impl</name> <value>org.apache.hadoop.hbase.regionserver.transactional.TransactionalRegion</value> </property> <property> <name>hbase.hlog.splitter.impl</name> <value>org.apache.hadoop.hbase.regionserver.transactional.THLogSplitter</value> </property> To further enable indexing use the above configuration except for the following replacements: <property> <name>hbase.regionserver.class</name> <value>org.apache.hadoop.hbase.ipc.IndexedRegionInterface</value> </property> <property> <name>hbase.regionserver.impl</name> <value>org.apache.hadoop.hbase.regionserver.tableindexed.IndexedRegionServer</value> </property> <property> <name>hbase.hregion.impl</name> <value>org.apache.hadoop.hbase.regionserver.tableindexed.IndexedRegion</value> </property> Also, currently you have to manually create the GLOBAL_TRX_LOG table with HBaseBackedTransactionLogger.createTable() before you start using any transactions. For more details, looks at the package.html in the appropriate client package of the source.
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