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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
<concept id="runtime_filter_max_size" rev="2.6.0 IMPALA-3480">
<title>RUNTIME_FILTER_MAX_SIZE Query Option (<keyword keyref="impala26"/> or higher only)</title>
<titlealts audience="PDF"><navtitle>RUNTIME_FILTER_MAX_SIZE</navtitle></titlealts>
<data name="Category" value="Impala"/>
<data name="Category" value="Impala Query Options"/>
<data name="Category" value="Performance"/>
<data name="Category" value="Developers"/>
<data name="Category" value="Data Analysts"/>
<p rev="2.6.0 IMPALA-3480">
<indexterm audience="hidden">RUNTIME_FILTER_MAX_SIZE query option</indexterm>
The <codeph>RUNTIME_FILTER_MAX_SIZE</codeph> query option
adjusts the settings for the runtime filtering feature.
This option defines the maximum size for a filter,
no matter what the estimates produced by the planner are.
This value also overrides any lower number specified for the
<codeph>RUNTIME_BLOOM_FILTER_SIZE</codeph> query option.
Filter sizes are rounded up to the nearest power of two.
<p conref="../shared/impala_common.xml#common/type_integer"/>
<b>Default:</b> 0 (meaning use the value from the corresponding <cmdname>impalad</cmdname> startup option)
<p conref="../shared/impala_common.xml#common/added_in_260"/>
<p conref="../shared/impala_common.xml#common/usage_notes_blurb"/>
<p conref="../shared/impala_common.xml#common/runtime_filtering_option_caveat"/>
<p conref="../shared/impala_common.xml#common/kudu_blurb"/>
<p rev="2.11.0 IMPALA-4252" conref="../shared/impala_common.xml#common/filter_option_bloom_only"/>
<p conref="../shared/impala_common.xml#common/related_info"/>
<xref href="impala_runtime_filtering.xml"/>,
<xref href="impala_runtime_filter_mode.xml#runtime_filter_mode"/>,
<xref href="impala_runtime_filter_min_size.xml#runtime_filter_min_size"/>,
<xref href="impala_runtime_bloom_filter_size.xml#runtime_bloom_filter_size"/>