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d484d2f684
This now gives a clean RAT check with bin/check-rat-report.py, which is one way for the Impala community to check compliance with ASF rules on intellectual property. Change-Id: I2ad06435f84a65ba126759e42a18fdaf52cd7036 Reviewed-on: http://gerrit.cloudera.org:8080/5232 Reviewed-by: Jim Apple <jbapple-impala@apache.org> Tested-by: Impala Public Jenkins Reviewed-by: John Russell <jrussell@cloudera.com>
59 lines
2.2 KiB
XML
59 lines
2.2 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!--
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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-->
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<!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept id="hbase_cache_blocks">
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<title>HBASE_CACHE_BLOCKS Query Option</title>
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<titlealts audience="PDF"><navtitle>HBASE_CACHE_BLOCKS</navtitle></titlealts>
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<prolog>
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<metadata>
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<data name="Category" value="Impala"/>
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<data name="Category" value="HBase"/>
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<data name="Category" value="Impala Query Options"/>
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<data name="Category" value="Developers"/>
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<data name="Category" value="Data Analysts"/>
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</metadata>
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</prolog>
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<conbody>
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<p>
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<indexterm audience="Cloudera">HBASE_CACHE_BLOCKS query option</indexterm>
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Setting this option is equivalent to calling the
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<codeph>setCacheBlocks</codeph> method of the class <xref
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href="http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/client/Scan.html"
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scope="external" format="html"
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>org.apache.hadoop.hbase.client.Scan</xref>, in an HBase Java
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application. Helps to control the memory pressure on the HBase
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RegionServer, in conjunction with the <codeph>HBASE_CACHING</codeph> query
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option. </p>
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<p conref="../shared/impala_common.xml#common/type_boolean"/>
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<p conref="../shared/impala_common.xml#common/default_false_0"/>
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<p conref="../shared/impala_common.xml#common/related_info"/>
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<p>
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<xref href="impala_hbase.xml#impala_hbase"/>,
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<xref href="impala_hbase_caching.xml#hbase_caching"/>
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</p>
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</conbody>
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</concept>
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