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Posted to commits@kudu.apache.org by jd...@apache.org on 2016/02/26 22:22:55 UTC
[07/46] incubator-kudu git commit: Update docs and site for 0.7.0
release
http://git-wip-us.apache.org/repos/asf/incubator-kudu/blob/906def4c/releases/0.7.0/docs/introduction.html
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+---
+title: Introducing Apache Kudu (incubating)
+layout: default
+active_nav: docs
+last_updated: 'Last updated 2016-02-10 16:04:25 SAST'
+---
+<!--
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+
+<div class="container">
+ <div class="row">
+ <div class="col-md-9">
+
+<h1>Introducing Apache Kudu (incubating)</h1>
+ <div id="preamble">
+<div class="sectionbody">
+<div class="paragraph">
+<p>Kudu is a columnar storage manager developed for the Hadoop platform. Kudu shares
+the common technical properties of Hadoop ecosystem applications: it runs on commodity
+hardware, is horizontally scalable, and supports highly available operation.</p>
+</div>
+<div class="paragraph">
+<p>Kudu’s design sets it apart. Some of Kudu’s benefits include:</p>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p>Fast processing of OLAP workloads.</p>
+</li>
+<li>
+<p>Integration with MapReduce, Spark and other Hadoop ecosystem components.</p>
+</li>
+<li>
+<p>Tight integration with Cloudera Impala, making it a good, mutable alternative
+to using HDFS with Parquet.</p>
+</li>
+<li>
+<p>Strong but flexible consistency model, allowing you to choose consistency
+requirements on a per-request basis, including the option for strict-serializable consistency.</p>
+</li>
+<li>
+<p>Strong performance for running sequential and random workloads simultaneously.</p>
+</li>
+<li>
+<p>Easy to administer and manage with Cloudera Manager.</p>
+</li>
+<li>
+<p>High availability. Tablet Servers and Masters use the <a href="#raft">Raft Consensus Algorithm</a>, which ensures that
+as long as more than half the total number of replicas is available, the tablet is available for
+reads and writes. For instance, if 2 out of 3 replicas or 3 out of 5 replicas are available, the tablet
+is available.</p>
+<div class="paragraph">
+<p>Reads can be serviced by read-only follower tablets, even in the event of a
+leader tablet failure.</p>
+</div>
+</li>
+<li>
+<p>Structured data model.</p>
+</li>
+</ul>
+</div>
+<div class="paragraph">
+<p>By combining all of these properties, Kudu targets support for families of
+applications that are difficult or impossible to implement on current generation
+Hadoop storage technologies. A few examples of applications for which Kudu is a great
+solution are:</p>
+</div>
+<div class="ulist">
+<ul>
+<li>
+<p>Reporting applications where newly-arrived data needs to be immediately available for end users</p>
+</li>
+<li>
+<p>Time-series applications that must simultaneously support:</p>
+<div class="ulist">
+<ul>
+<li>
+<p>queries across large amounts of historic data</p>
+</li>
+<li>
+<p>granular queries about an individual entity that must return very quickly</p>
+</li>
+</ul>
+</div>
+</li>
+<li>
+<p>Applications that use predictive models to make real-time decisions with periodic
+refreshes of the predictive model based on all historic data</p>
+</li>
+</ul>
+</div>
+<div class="paragraph">
+<p>For more information about these and other scenarios, see <a href="#kudu_use_cases">Example Use Cases</a>.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_concepts_and_terms"><a class="link" href="#_concepts_and_terms">Concepts and Terms</a></h2>
+<div class="sectionbody">
+<div id="kudu_columnar_data_store" class="paragraph">
+<div class="title">Columnar Data Store</div>
+<p>Kudu is a <em>columnar data store</em>. A columnar data store stores data in strongly-typed
+columns. With a proper design, it is superior for analytical or data warehousing
+workloads for several reasons.</p>
+</div>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">Read Efficiency</dt>
+<dd>
+<p>For analytical queries, you can read a single column, or a portion
+of that column, while ignoring other columns. This means you can fulfill your query
+while reading a minimal number of blocks on disk. With a row-based store, you need
+to read the entire row, even if you only return values from a few columns.</p>
+</dd>
+<dt class="hdlist1">Data Compression</dt>
+<dd>
+<p>Because a given column contains only one type of data, pattern-based
+compression can be orders of magnitude more efficient than compressing mixed data
+types. Combined with the efficiencies of reading data from columns, compression allows
+you to fulfill your query while reading even fewer blocks from disk. See
+<a href="schema_design.html#encoding">Data Compression</a></p>
+</dd>
+</dl>
+</div>
+<div class="paragraph">
+<div class="title">Table</div>
+<p>A <em>table</em> is where your data is stored in Kudu. A table has a schema and
+a totally ordered primary key. A table is split into segments called tablets.</p>
+</div>
+<div class="paragraph">
+<div class="title">Tablet</div>
+<p>A <em>tablet</em> is a contiguous segment of a table. A given tablet is
+replicated on multiple tablet servers, and one of these replicas is considered
+the leader tablet. Any replica can service reads, and writes require consensus
+among the set of tablet servers serving the tablet.</p>
+</div>
+<div class="paragraph">
+<div class="title">Tablet Server</div>
+<p>A <em>tablet server</em> stores and serves tablets to clients. For a
+given tablet, one tablet server serves the lead tablet, and the others serve
+follower replicas of that tablet. Only leaders service write requests, while
+leaders or followers each service read requests. Leaders are elected using
+<a href="#raft">Raft Consensus Algorithm</a>. One tablet server can serve multiple tablets, and one tablet can be served
+by multiple tablet servers.</p>
+</div>
+<div class="paragraph">
+<div class="title">Master</div>
+<p>The <em>master</em> keeps track of all the tablets, tablet servers, the
+<a href="#catalog_table">Catalog Table</a>, and other metadata related to the cluster. At a given point
+in time, there can only be one acting master (the leader). If the current leader
+disappears, a new master is elected using <a href="#raft">Raft Consensus Algorithm</a>.</p>
+</div>
+<div class="paragraph">
+<p>The master also coordinates metadata operations for clients. For example, when
+creating a new table, the client internally sends an RPC to the master. The
+master writes the metadata for the new table into the catalog table, and
+coordinates the process of creating tablets on the tablet servers.</p>
+</div>
+<div class="paragraph">
+<p>All the master’s data is stored in a tablet, which can be replicated to all the
+other candidate masters.</p>
+</div>
+<div class="paragraph">
+<p>Tablet servers heartbeat to the master at a set interval (the default is once
+per second).</p>
+</div>
+<div id="raft" class="paragraph">
+<div class="title">Raft Consensus Algorithm</div>
+<p>Kudu uses the <a href="https://raft.github.io/">Raft consensus algorithm</a> as
+a means to guarantee fault-tolerance and consistency, both for regular tablets and for master
+data. Through Raft, multiple replicas of a tablet elect a <em>leader</em>, which is responsible
+for accepting and replicating writes to <em>follower</em> replicas. Once a write is persisted
+in a majority of replicas it is acknowledged to the client. A given group of <code>N</code> replicas
+(usually 3 or 5) is able to accept writes with at most <code>(N - 1)/2</code> faulty replicas.</p>
+</div>
+<div id="catalog_table" class="paragraph">
+<div class="title">Catalog Table</div>
+<p>The <em>catalog table</em> is the central location for
+metadata of Kudu. It stores information about tables and tablets. The catalog
+table is accessible to clients via the master, using the client API.</p>
+</div>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">Tables</dt>
+<dd>
+<p>table schemas, locations, and states</p>
+</dd>
+<dt class="hdlist1">Tablets</dt>
+<dd>
+<p>the list of existing tablets, which tablet servers have replicas of
+each tablet, the tablet’s current state, and start and end keys.</p>
+</dd>
+</dl>
+</div>
+<div class="paragraph">
+<div class="title">Logical Replication</div>
+<p>Kudu replicates operations, not on-disk data. This is referred to as <em>logical
+replication</em>, as opposed to <em>physical replication</em>. Physical operations, such as
+compaction, do not need to transmit the data over the network. This results in a
+substantial reduction in network traffic for heavy write scenarios.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_architectural_overview"><a class="link" href="#_architectural_overview">Architectural Overview</a></h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The following diagram shows a Kudu cluster with three masters and multiple tablet
+servers, each serving multiple tablets. It illustrates how Raft consensus is used
+to allow for both leaders and followers for both the masters and tablet servers. In
+addition, a tablet server can be a leader for some tablets, and a follower for others.
+Leaders are shown in gold, while followers are shown in blue.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+Multiple masters are not supported during the Kudu beta period.
+</td>
+</tr>
+</table>
+</div>
+<div class="imageblock">
+<div class="content">
+<img src="./images/kudu-architecture-2.png" alt="Kudu Architecture" width="800">
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="kudu_use_cases"><a class="link" href="#kudu_use_cases">Example Use Cases</a></h2>
+<div class="sectionbody">
+<div class="paragraph">
+<div class="title">Streaming Input with Near Real Time Availability</div>
+<p>A common challenge in data analysis is one where new data arrives rapidly and constantly,
+and the same data needs to be available in near real time for reads, scans, and
+updates. Kudu offers the powerful combination of fast inserts and updates with
+efficient columnar scans to enable real-time analytics use cases on a single storage layer.</p>
+</div>
+<div class="paragraph">
+<div class="title">Time-series application with widely varying access patterns</div>
+<p>A time-series schema is one in which data points are organized and keyed according
+to the time at which they occurred. This can be useful for investigating the
+performance of metrics over time or attempting to predict future behavior based
+on past data. For instance, time-series customer data might be used both to store
+purchase click-stream history and to predict future purchases, or for use by a
+customer support representative. While these different types of analysis are occurring,
+inserts and mutations may also be occurring individually and in bulk, and become available
+immediately to read workloads. Kudu can handle all of these access patterns
+simultaneously in a scalable and efficient manner.</p>
+</div>
+<div class="paragraph">
+<p>Kudu is a good fit for time-series workloads for several reasons. With Kudu’s support for
+hash-based partitioning, combined with its native support for compound row keys, it is
+simple to set up a table spread across many servers without the risk of "hotspotting"
+that is commonly observed when range partitioning is used. Kudu’s columnar storage engine
+is also beneficial in this context, because many time-series workloads read only a few columns,
+as opposed to the whole row.</p>
+</div>
+<div class="paragraph">
+<p>In the past, you might have needed to use multiple data stores to handle different
+data access patterns. This practice adds complexity to your application and operations, and
+duplicates storage. Kudu can handle all of these access patterns natively and efficiently,
+without the need to off-load work to other data stores.</p>
+</div>
+<div class="paragraph">
+<div class="title">Predictive Modeling</div>
+<p>Data analysts often develop predictive learning models from large sets of data. The
+model and the data may need to be updated or modified often as the learning takes
+place or as the situation being modeled changes. In addition, the scientist may want
+to change one or more factors in the model to see what happens over time. Updating
+a large set of data stored in files in HDFS is resource-intensive, as each file needs
+to be completely rewritten. In Kudu, updates happen in near real time. The scientist
+can tweak the value, re-run the query, and refresh the graph in seconds or minutes,
+rather than hours or days. In addition, batch or incremental algorithms can be run
+across the data at any time, with near-real-time results.</p>
+</div>
+<div class="paragraph">
+<div class="title">Combining Data In Kudu With Legacy Systems</div>
+<p>Companies generate data from multiple sources and store it in a variety of systems
+and formats. For instance, some of your data may be stored in Kudu, some in a traditional
+RDBMS, and some in files in HDFS. You can access and query all of these sources and
+formats using Impala, without the need to change your legacy systems.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_next_steps"><a class="link" href="#_next_steps">Next Steps</a></h2>
+<div class="sectionbody">
+<div class="ulist">
+<ul>
+<li>
+<p><a href="quickstart.html">Get Started With Kudu</a></p>
+</li>
+<li>
+<p><a href="installation.html">Installing Kudu</a></p>
+</li>
+</ul>
+</div>
+</div>
+</div>
+ </div>
+ <div class="col-md-3">
+
+ <div id="toc" data-spy="affix" data-offset-top="70">
+ <ul>
+
+ <li>
+<span class="active-toc">Introducing Kudu</span>
+ <ul class="sectlevel1">
+<li><a href="#_concepts_and_terms">Concepts and Terms</a></li>
+<li><a href="#_architectural_overview">Architectural Overview</a></li>
+<li><a href="#kudu_use_cases">Example Use Cases</a></li>
+<li><a href="#_next_steps">Next Steps</a></li>
+</ul>
+ </li>
+ <li>
+
+ <a href="release_notes.html">Kudu Release Notes</a>
+ </li>
+ <li>
+
+ <a href="quickstart.html">Getting Started with Kudu</a>
+ </li>
+ <li>
+
+ <a href="installation.html">Installation Guide</a>
+ </li>
+ <li>
+
+ <a href="configuration.html">Configuring Kudu</a>
+ </li>
+ <li>
+
+ <a href="kudu_impala_integration.html">Using Impala with Kudu</a>
+ </li>
+ <li>
+
+ <a href="administration.html">Administering Kudu</a>
+ </li>
+ <li>
+
+ <a href="troubleshooting.html">Troubleshooting Kudu</a>
+ </li>
+ <li>
+
+ <a href="developing.html">Developing Applications with Kudu</a>
+ </li>
+ <li>
+
+ <a href="schema_design.html">Kudu Schema Design</a>
+ </li>
+ <li>
+
+ <a href="transaction_semantics.html">Kudu Transaction Semantics</a>
+ </li>
+ <li>
+
+ <a href="contributing.html">Contributing to Kudu</a>
+ </li>
+ <li>
+
+ <a href="style_guide.html">Kudu Documentation Style Guide</a>
+ </li>
+ <li>
+
+ <a href="configuration_reference.html">Kudu Configuration Reference</a>
+ </li>
+ </ul>
+ </div>
+ </div>
+ </div>
+</div>
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+---
+title: kudu-master Flags
+layout: default
+active_nav: docs
+last_updated: 'Last updated 2016-02-25 23:14:56 SAST'
+---
+<!--
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+
+
+<div class="container">
+ <div class="row">
+ <div class="col-md-9">
+
+<h1><code>kudu-master</code> Flags</h1>
+ <div class="sect1">
+<h2 id="_stable_flags"><a class="link" href="#_stable_flags">Stable Flags</a></h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Flags tagged <code>stable</code> and not <code>advanced</code> are safe to use for common
+configuration tasks.</p>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_block_cache_capacity_mb"><a class="link" href="#kudu-master_block_cache_capacity_mb"><code>--block_cache_capacity_mb</code></a></h3>
+<div class="paragraph">
+<p>block cache capacity in MB</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">int64</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>512</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_log_force_fsync_all"><a class="link" href="#kudu-master_log_force_fsync_all"><code>--log_force_fsync_all</code></a></h3>
+<div class="paragraph">
+<p>Whether the Log/WAL should explicitly call fsync() after each write.</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">bool</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>false</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_fs_data_dirs"><a class="link" href="#kudu-master_fs_data_dirs"><code>--fs_data_dirs</code></a></h3>
+<div class="paragraph">
+<p>Comma-separated list of directories with data blocks. If this is not specified, fs_wal_dir will be used as the sole data block directory.</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">string</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">none</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_fs_wal_dir"><a class="link" href="#kudu-master_fs_wal_dir"><code>--fs_wal_dir</code></a></h3>
+<div class="paragraph">
+<p>Directory with write-ahead logs. If this is not specified, the program will not start. May be the same as fs_data_dirs</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">string</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">none</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_rpc_bind_addresses"><a class="link" href="#kudu-master_rpc_bind_addresses"><code>--rpc_bind_addresses</code></a></h3>
+<div class="paragraph">
+<p>Comma-separated list of addresses to bind to for RPC connections. Currently, ephemeral ports (i.e. port 0) are not allowed.</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">string</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>0.0.0.0</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_webserver_port"><a class="link" href="#kudu-master_webserver_port"><code>--webserver_port</code></a></h3>
+<div class="paragraph">
+<p>Port to bind to for the web server</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">int32</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>0</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_maintenance_manager_num_threads"><a class="link" href="#kudu-master_maintenance_manager_num_threads"><code>--maintenance_manager_num_threads</code></a></h3>
+<div class="paragraph">
+<p>Size of the maintenance manager thread pool. Beyond a value of '1', one thread is reserved for emergency flushes. For spinning disks, the number of threads should not be above the number of devices.</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">int32</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>1</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_log_filename"><a class="link" href="#kudu-master_log_filename"><code>--log_filename</code></a></h3>
+<div class="paragraph">
+<p>Prefix of log filename - full path is <log_dir>/<log_filename>.[INFO|WARN|ERROR|FATAL]</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">string</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">none</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_memory_limit_hard_bytes"><a class="link" href="#kudu-master_memory_limit_hard_bytes"><code>--memory_limit_hard_bytes</code></a></h3>
+<div class="paragraph">
+<p>Maximum amount of memory this daemon should use, in bytes. A value of 0 autosizes based on the total system memory. A value of -1 disables all memory limiting.</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">int64</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>0</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_flagfile"><a class="link" href="#kudu-master_flagfile"><code>--flagfile</code></a></h3>
+<div class="paragraph">
+<p>load flags from file</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">string</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">none</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_help"><a class="link" href="#kudu-master_help"><code>--help</code></a></h3>
+<div class="paragraph">
+<p>show help on all flags [tip: all flags can have two dashes]</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">bool</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>false</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_version"><a class="link" href="#kudu-master_version"><code>--version</code></a></h3>
+<div class="paragraph">
+<p>show version and build info and exit</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">bool</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>false</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_colorlogtostderr"><a class="link" href="#kudu-master_colorlogtostderr"><code>--colorlogtostderr</code></a></h3>
+<div class="paragraph">
+<p>color messages logged to stderr (if supported by terminal)</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">bool</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>false</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">runtime,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_log_dir"><a class="link" href="#kudu-master_log_dir"><code>--log_dir</code></a></h3>
+<div class="paragraph">
+<p>If specified, logfiles are written into this directory instead of the default logging directory.</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">string</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">none</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_logtostderr"><a class="link" href="#kudu-master_logtostderr"><code>--logtostderr</code></a></h3>
+<div class="paragraph">
+<p>log messages go to stderr instead of logfiles</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">bool</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>false</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">runtime,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_max_log_size"><a class="link" href="#kudu-master_max_log_size"><code>--max_log_size</code></a></h3>
+<div class="paragraph">
+<p>approx. maximum log file size (in MB). A value of 0 will be silently overridden to 1.</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">int32</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>1800</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">runtime,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="kudu-master_stable_advanced"><a class="link" href="#kudu-master_stable_advanced">Stable, Advanced Flags</a></h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Flags tagged <code>stable</code> and <code>advanced</code> are supported, but should be considered
+"expert" options and should be used carefully and after thorough testing.</p>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_enable_process_lifetime_heap_profiling"><a class="link" href="#kudu-master_enable_process_lifetime_heap_profiling"><code>--enable_process_lifetime_heap_profiling</code></a></h3>
+<div class="paragraph">
+<p>Enables heap profiling for the lifetime of the process. Profile output will be stored in the directory specified by -heap_profile_path. Enabling this option will disable the on-demand/remote server profile handlers.</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">bool</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>false</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_heap_profile_path"><a class="link" href="#kudu-master_heap_profile_path"><code>--heap_profile_path</code></a></h3>
+<div class="paragraph">
+<p>Output path to store heap profiles. If not set profiles are stored in /tmp/<process-name>.<pid>.<n>.heap.</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">string</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">none</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_fromenv"><a class="link" href="#kudu-master_fromenv"><code>--fromenv</code></a></h3>
+<div class="paragraph">
+<p>set flags from the environment [use 'export FLAGS_flag1=value']</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">string</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">none</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_tryfromenv"><a class="link" href="#kudu-master_tryfromenv"><code>--tryfromenv</code></a></h3>
+<div class="paragraph">
+<p>set flags from the environment if present</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">string</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">none</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_undefok"><a class="link" href="#kudu-master_undefok"><code>--undefok</code></a></h3>
+<div class="paragraph">
+<p>comma-separated list of flag names that it is okay to specify on the command line even if the program does not define a flag with that name. IMPORTANT: flags in this list that have arguments MUST use the flag=value format</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">string</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">none</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_helpmatch"><a class="link" href="#kudu-master_helpmatch"><code>--helpmatch</code></a></h3>
+<div class="paragraph">
+<p>show help on modules whose name contains the specified substr</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">string</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">none</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_helpon"><a class="link" href="#kudu-master_helpon"><code>--helpon</code></a></h3>
+<div class="paragraph">
+<p>show help on the modules named by this flag value</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">string</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">none</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_helppackage"><a class="link" href="#kudu-master_helppackage"><code>--helppackage</code></a></h3>
+<div class="paragraph">
+<p>show help on all modules in the main package</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">bool</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>false</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_helpshort"><a class="link" href="#kudu-master_helpshort"><code>--helpshort</code></a></h3>
+<div class="paragraph">
+<p>show help on only the main module for this program</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">bool</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>false</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_helpxml"><a class="link" href="#kudu-master_helpxml"><code>--helpxml</code></a></h3>
+<div class="paragraph">
+<p>produce an xml version of help</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">bool</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>false</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_log_link"><a class="link" href="#kudu-master_log_link"><code>--log_link</code></a></h3>
+<div class="paragraph">
+<p>Put additional links to the log files in this directory</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">string</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">none</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_log_prefix"><a class="link" href="#kudu-master_log_prefix"><code>--log_prefix</code></a></h3>
+<div class="paragraph">
+<p>Prepend the log prefix to the start of each log line</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">bool</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>true</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">runtime,advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_minloglevel"><a class="link" href="#kudu-master_minloglevel"><code>--minloglevel</code></a></h3>
+<div class="paragraph">
+<p>Messages logged at a lower level than this don’t actually get logged anywhere</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">int32</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>0</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">runtime,advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_stderrthreshold"><a class="link" href="#kudu-master_stderrthreshold"><code>--stderrthreshold</code></a></h3>
+<div class="paragraph">
+<p>log messages at or above this level are copied to stderr in addition to logfiles. This flag obsoletes --alsologtostderr.</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">int32</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>2</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">runtime,advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_stop_logging_if_full_disk"><a class="link" href="#kudu-master_stop_logging_if_full_disk"><code>--stop_logging_if_full_disk</code></a></h3>
+<div class="paragraph">
+<p>Stop attempting to log to disk if the disk is full.</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">bool</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>false</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">runtime,advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_symbolize_stacktrace"><a class="link" href="#kudu-master_symbolize_stacktrace"><code>--symbolize_stacktrace</code></a></h3>
+<div class="paragraph">
+<p>Symbolize the stack trace in the tombstone</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">bool</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>true</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">runtime,advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_v"><a class="link" href="#kudu-master_v"><code>--v</code></a></h3>
+<div class="paragraph">
+<p>Show all VLOG(m) messages for m ⇐ this. Overridable by --vmodule.</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">int32</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><code>0</code></p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">runtime,advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="kudu-master_vmodule"><a class="link" href="#kudu-master_vmodule"><code>--vmodule</code></a></h3>
+<div class="paragraph">
+<p>per-module verbose level. Argument is a comma-separated list of <module name>=<log level>. <module name> is a glob pattern, matched against the filename base (that is, name ignoring .cc/.h./-inl.h). <log level> overrides any value given by --v.</p>
+</div>
+<table class="tableblock frame-all grid-all" style="width: 50%;">
+<colgroup>
+<col style="width: 25%;">
+<col style="width: 75%;">
+</colgroup>
+<tbody>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Type</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">string</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Default</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">none</p></td>
+</tr>
+<tr>
+<th class="tableblock halign-left valign-top"><p class="tableblock">Tags</p></th>
+<td class="tableblock halign-left valign-top"><p class="tableblock">advanced,stable</p></td>
+</tr>
+</tbody>
+</table>
+<div class="paragraph">
+<p> </p>
+</div>
+<hr>
+</div>
+</div>
+</div>
+ </div>
+ <div class="col-md-3">
+
+ <div id="toc" data-spy="affix" data-offset-top="70">
+ <ul>
+
+ <li>
+
+ <a href="introduction.html">Introducing Kudu</a>
+ </li>
+ <li>
+
+ <a href="release_notes.html">Kudu Release Notes</a>
+ </li>
+ <li>
+
+ <a href="quickstart.html">Getting Started with Kudu</a>
+ </li>
+ <li>
+
+ <a href="installation.html">Installation Guide</a>
+ </li>
+ <li>
+
+ <a href="configuration.html">Configuring Kudu</a>
+ </li>
+ <li>
+
+ <a href="kudu_impala_integration.html">Using Impala with Kudu</a>
+ </li>
+ <li>
+
+ <a href="administration.html">Administering Kudu</a>
+ </li>
+ <li>
+
+ <a href="troubleshooting.html">Troubleshooting Kudu</a>
+ </li>
+ <li>
+
+ <a href="developing.html">Developing Applications with Kudu</a>
+ </li>
+ <li>
+
+ <a href="schema_design.html">Kudu Schema Design</a>
+ </li>
+ <li>
+
+ <a href="transaction_semantics.html">Kudu Transaction Semantics</a>
+ </li>
+ <li>
+
+ <a href="contributing.html">Contributing to Kudu</a>
+ </li>
+ <li>
+
+ <a href="style_guide.html">Kudu Documentation Style Guide</a>
+ </li>
+ <li>
+
+ <a href="configuration_reference.html">Kudu Configuration Reference</a>
+ </li>
+ </ul>
+ </div>
+ </div>
+ </div>
+</div>
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