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https://issues.apache.org/jira/browse/HADOOP-1913?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HADOOP-1913:
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Attachment: build_table_index.take5.patch
Fixes so all tests work. Add to AbstractMergeTestBase and TestTableMapReduce
tearDown method a try/catch around the final call to fs.close. The filesystem
may have been shutdown by the shutdown of dfsCluster -- if its non-null (Its
now more likely non-null since this patch adds setting of the dfs 'cluster'
data member when its passed to one of the MiniHbaseCluster constructors where
before it left it null. The 'set' is needed by the TestTableIndex test).
Move mapreduce files into a new test mapred subpackage.
> [HBase] Build a Lucene index on an HBase table
> ----------------------------------------------
>
> Key: HADOOP-1913
> URL: https://issues.apache.org/jira/browse/HADOOP-1913
> Project: Hadoop
> Issue Type: New Feature
> Components: contrib/hbase
> Reporter: Ning Li
> Priority: Minor
> Attachments: build_table_index.patch,
> build_table_index.take2.again.patch, build_table_index.take2.patch,
> build_table_index.take3.patch, build_table_index.take4.patch,
> build_table_index.take5.patch
>
>
> This patch provides a Reducer class and other related classes which help to
> build a Lucene index on an HBase table. The index build part is similar to
> that of Nutch.
> - Each row is modeled as a Lucene document: row key is indexed in its
> untokenized form, column name-value pairs are Lucene field name-value pairs.
> - IndexConf is used to configure various Lucene parameters, specify whether
> to optimize an index and which columns to index and/or store, in tokenized or
> untokenized form, etc.
> - The number of reduce tasks decides the number of indexes (partitions).
> The index(es) is stored in the output path of job configuration.
> - The index build process is done in the reduce phase. Users can use the
> map phase to join rows from different tables or to pre-parse/analyze column
> content, etc.
> - A junit test is added to test the build of an index on an HBase table
> with an identity mapper. It also serves as an example on how to use the new
> classes.
> - BuildTableIndex is provided to help building an index on an HBase table.
> It should be moved to examples package if HBase decides to have one.
> This patch requires the inclusion of the Lucene library.
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