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eadd35f6d5
The recent documentation formatting changes introduced the navigation panel on the left. However, due to the length of the query options navigation title these could overlap with the documentation paragraphs. This commit removes the underscores from the navigation titles of the query options, so browsers can break them into multiple lines. Additionally, the "SET" and "Query Options for the SET Statement" pages are merged to save some more space for the query option navigation titles. Testing: - Built the documentation and tested manually Change-Id: Icec787d7a2af848aaaff65be2ecf311a5ce8fe7f Reviewed-on: http://gerrit.cloudera.org:8080/20556 Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com> Reviewed-by: Jason Fehr <jfehr@cloudera.com> Reviewed-by: Peter Rozsa <prozsa@cloudera.com> Reviewed-by: Tamas Mate <tmater@apache.org>
102 lines
3.1 KiB
XML
102 lines
3.1 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 rev="2.12.0" id="idle_session_timeout">
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<title>IDLE_SESSION_TIMEOUT Query Option (<keyword keyref="impala212_full"/> or higher only)</title>
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<titlealts audience="PDF">
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<navtitle>IDLE SESSION TIMEOUT</navtitle>
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</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="Impala Query Options"/>
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<data name="Category" value="Querying"/>
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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 rev="2.12.0">
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The <codeph>IDLE_SESSION_TIMEOUT</codeph> query option sets the time in seconds after
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which an idle session is cancelled. A session is idle when no activity is occurring for
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any of the queries in that session, and the session has not started any new queries. Once
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a session is expired, you cannot issue any new query requests to it. The session remains
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open, but the only operation you can perform is to close it.
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</p>
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<p rev="2.12.0">
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The <codeph>IDLE_SESSION_TIMEOUT</codeph> query option overrides the
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<codeph>‑‑idle_session_timeout</codeph> startup option. See
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<xref href="impala_timeouts.xml#timeouts"/> for the
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<codeph>‑‑idle_session_timeout</codeph> startup option.
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</p>
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<p>
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The <codeph>IDLE_SESSION_TIMEOUT</codeph> query option allows JDBC/ODBC connections to set
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the session timeout as a query option with the <codeph>SET</codeph> statement.
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</p>
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<p>
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<b>Syntax:</b>
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</p>
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<codeblock>SET IDLE_SESSION_TIMEOUT=<varname>seconds</varname>;</codeblock>
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<p>
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<b>Type:</b> numeric
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</p>
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<p>
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<b>Default:</b> 0
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<ul>
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<li>
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If <codeph>‑‑idle_session_timeout</codeph> is not set, the session never
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expires.
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</li>
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<li>
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If <codeph>‑‑idle_session_timeout</codeph> is set, use that timeout value.
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</li>
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</ul>
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</p>
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<p>
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<b>Added in:</b> <keyword keyref="impala212_full"/>
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</p>
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<p>
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<b>Related information:</b>
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</p>
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<p>
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<xref href="impala_timeouts.xml#timeouts"/>
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</p>
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</conbody>
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</concept>
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