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impala/docs/topics/impala_hbase_cache_blocks.xml
Jim Apple 3be0f122a5 IMPALA-3398: Add docs to main Impala branch.
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Change-Id: I8861e99adc446f659a04463ca78c79200669484f
Reviewed-on: http://gerrit.cloudera.org:8080/5014
Reviewed-by: John Russell <jrussell@cloudera.com>
Tested-by: John Russell <jrussell@cloudera.com>
2016-11-17 22:38:44 +00:00

41 lines
1.5 KiB
XML

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
<concept id="hbase_cache_blocks">
<title>HBASE_CACHE_BLOCKS Query Option</title>
<titlealts audience="PDF"><navtitle>HBASE_CACHE_BLOCKS</navtitle></titlealts>
<prolog>
<metadata>
<data name="Category" value="Impala"/>
<data name="Category" value="HBase"/>
<data name="Category" value="Impala Query Options"/>
<data name="Category" value="Developers"/>
<data name="Category" value="Data Analysts"/>
</metadata>
</prolog>
<conbody>
<p>
<indexterm audience="Cloudera">HBASE_CACHE_BLOCKS query option</indexterm>
Setting this option is equivalent to calling the
<codeph>setCacheBlocks</codeph> method of the class <xref
href="http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/Scan.html"
scope="external" format="html"
>org.apache.hadoop.hbase.client.Scan</xref>, in an HBase Java
application. Helps to control the memory pressure on the HBase
RegionServer, in conjunction with the <codeph>HBASE_CACHING</codeph> query
option. </p>
<p conref="../shared/impala_common.xml#common/type_boolean"/>
<p conref="../shared/impala_common.xml#common/default_false_0"/>
<p conref="../shared/impala_common.xml#common/related_info"/>
<p>
<xref href="impala_hbase.xml#impala_hbase"/>,
<xref href="impala_hbase_caching.xml#hbase_caching"/>
</p>
</conbody>
</concept>