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From bridg...@apache.org
Subject [35/51] [partial] drill-site git commit: site update
Date Fri, 24 Feb 2017 21:44:53 GMT
http://git-wip-us.apache.org/repos/asf/drill-site/blob/d9845dc4/blog/2015/10/16/drill-1.2-released/index.html
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-      <h1 class="post-title">Drill 1.2 Released</h1>
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-    
-      
-      
-      <strong>Author:</strong> Jacques Nadeau (PMC Chair and Committer, Apache Drill)<br />
-    
-<strong>Date:</strong> Oct 16, 2015
-</p>
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-    <p>Today I&#39;m happy to announce the availability of the Drill 1.2 release. This release addresses <a href="https://issues.apache.org/jira/secure/ReleaseNote.jspa?version=12332042&amp;projectId=12313820">217 JIRAs</a> on top of the 1.1 release. Highlights include:</p>
-
-<h2 id="relational-database-support">Relational Database Support</h2>
-
-<p>Drill now includes a JDBC storage plugin for querying relational databases (RDBMSs). Users can run SQL queries that join data between non-relational datastores (eg, MongoDB, HBase, HDFS, S3) and relational databases (eg, MySQL, Oracle). For example, a single query can join log files in HDFS with a users table in MySQL. Drill automatically pushes execution (projections, filters, partial joins, etc.) down into the RDBMS whenever possible.</p>
-
-<h2 id="new-window-functions">New Window Functions</h2>
-
-<p>The 1.2 release adds additional window functions: <code>NTILE</code>, <code>FIRST_VALUE</code>, <code>LAST_VALUE</code>, <code>LEAD</code> and <code>LAG</code>. Drill now supports <a href="/docs/sql-window-functions-introduction/">15 different window functions</a>:</p>
-
-<ul>
-<li>Value Functions: <code>FIRST_VALUE</code>, <code>LAST_VALUE</code>, <code>LEAD</code>, <code>LAG</code></li>
-<li>Aggregate Functions: <code>AVG</code>, <code>COUNT</code>, <code>MAX</code>, <code>MIN</code>, <code>SUM</code></li>
-<li>Ranking Functions: <code>CUME_DIST</code>, <code>DENSE_RANK</code>, <code>NTILE</code>, <code>PERCENT_RANK</code>, <code>RANK</code>, <code>ROW_NUMBER</code></li>
-</ul>
-
-<p>In addition to supporting new window functions, Drill 1.2 adds support for multiple window functions in a single query. A query can contain multiple window functions that slice up the data in different ways by means of different <code>OVER</code> clauses, but they all act on the same collection of rows.</p>
-
-<h2 id="parquet-metadata-caching">Parquet Metadata Caching</h2>
-
-<p>When running a query against a directory tree with Parquet files, Drill scans the directory and reads the footers of the files during the planning phase. This allows Drill to prune partitions and optimize query execution for data locality. However, this process can be time consuming for directory trees with thousands of files. Drill 1.2 includes <a href="/docs/optimizing-parquet-reading/">a new feature</a> that caches the metadata information so that subsequent queries don&#39;t need to scan all the files. The cache is automatically maintained based on the directory timestamps.</p>
-
-<h2 id="performance-improvements-on-hbase-and-hive-tables">Performance Improvements on HBase and Hive Tables</h2>
-
-<p>Drill 1.2 introduces a faster read path for HBase and Hive tables. When querying Hive tables backed by Parquet files, Drill now uses a high-performance Parquet reader rather than the Hive SerDe.</p>
-
-<h2 id="drop-table-for-files-and-directories"><code>DROP TABLE</code> for Files and Directories</h2>
-
-<p>Drill 1.2 allows users to drop file- and directory-based tables with a SQL command (<code>DROP TABLE</code>).</p>
-
-<h2 id="enhanced-mongodb-integration">Enhanced MongoDB Integration</h2>
-
-<p>Drill 1.2 supports extended JSON types, addressing previous issues with queries on MongoDB collections. </p>
-
-<h2 id="many-more-fixes">Many More Fixes</h2>
-
-<p>Drill 1.2 includes hundreds of <a href="https://issues.apache.org/jira/secure/ReleaseNote.jspa?version=12332042&amp;projectId=12313820">other fixes and enhancements</a>.</p>
-
-<p>Download the <a href="https://drill.apache.org/download/">Drill 1.2 release</a> now and let us know your thoughts.</p>
-
-<p>Drill On!
-Jacques Nadeau</p>
-
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http://git-wip-us.apache.org/repos/asf/drill-site/blob/d9845dc4/blog/2015/11/23/drill-1.3-released/index.html
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-      <h1 class="post-title">Drill 1.3 Released</h1>
-    </div>
-    <p class="post-meta">
-    
-      
-      
-      <strong>Author:</strong> Jacques Nadeau (PMC Chair and Committer, Apache Drill)<br />
-    
-<strong>Date:</strong> Nov 23, 2015
-</p>
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-  <article class="post-content">
-    <p>Today I&#39;m happy to announce the availability of the Drill 1.3 release. This release addresses <a href="https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12313820&amp;version=12332946">58 JIRAs</a> on top of the 1.2 release. Highlights include:</p>
-
-<h2 id="enhanced-amazon-s3-support">Enhanced Amazon S3 Support</h2>
-
-<p>Drill 1.3 utilizes a new library, called s3a, for reading data from S3. The s3a library includes improvements over the previous s3n library, such as higher performance and the ability to read large files (over 5GB).</p>
-
-<p>In addition to the new s3a library, Drill 1.3 makes it easier to set up your AWS credentials. Simply edit the file <code>conf/core-site.xml</code> in the Drill install directory. For more information, check out the <a href="/docs/s3-storage-plugin/">step-by-step instructions</a> in the documentation.</p>
-
-<h2 id="heterogeneous-types">Heterogeneous Types</h2>
-
-<p>Drill 1.3 includes support for mixed-type columns, often found in systems like MongoDB and file formats like JSON. For example, Drill can now columns that evolve from one data type to another over time.</p>
-
-<p>Drill 1.3 provides a collection of functions that enable you to test the data type of a value. For example, if you have a column that has both lists (arrays) and numbers, you can use the following query to extract the first element from the array values:</p>
-
-<p><code>SELECT 1 + CASE WHEN is_list(a) THEN a[0] ELSE a END FROM table;</code></p>
-
-<h2 id="text-file-headers">Text File Headers</h2>
-
-<p>Drill is now able to parse the header row in a text file (CSV, TSV, etc.). Prior to Drill 1.3, data had to be accessed through the <code>columns</code> array:</p>
-<div class="highlight"><pre><code class="language-text" data-lang="text">SELECT columns[0], columns[1] FROM dfs.`/path/to/users.csv`
-</code></pre></div>
-<p>With Drill 1.3, you can use the actual column names in the CSV file:</p>
-<div class="highlight"><pre><code class="language-text" data-lang="text">SELECT name, address FROM dfs.`/path/to/users.csv`
-</code></pre></div>
-<p>Enabling header parsing is as simple as setting the <code>extractHeader</code> parameter in the storage plugin configuration for the desired file extensions. For more information, check out <a href="/docs/text-files-csv-tsv-psv/">the documentation</a>.</p>
-
-<h2 id="sequence-files">Sequence Files</h2>
-
-<p>Drill now <a href="/docs/querying-sequence-files/">supports sequence files</a>, a format commonly used in the Hadoop ecosystem. A sequence file contains a series of keys and values, and querying it with Drill is as easy as querying any other self-describing format:</p>
-<div class="highlight"><pre><code class="language-text" data-lang="text">SELECT *
-FROM dfs.tmp.`simple.seq`
-LIMIT 1;
-+--------------+---------------+
-|  binary_key  | binary_value  |
-+--------------+---------------+
-| [B@70828f46  | [B@b8c765f    |
-+--------------+---------------+
-</code></pre></div>
-<p>Drill&#39;s <code>CONVERT_FROM</code> function makes it easy to decode the binary values:</p>
-<div class="highlight"><pre><code class="language-text" data-lang="text">SELECT CONVERT_FROM(binary_key, &#39;UTF8&#39;), CONVERT_FROM(binary_value, &#39;UTF8&#39;)
-FROM dfs.tmp.`simple.seq`
-LIMIT 1
-;
-+-----------+-------------+
-|  EXPR$0   |   EXPR$1    |
-+-----------+-------------+
-| key0      |   value0    |
-+-----------+-------------+
-</code></pre></div>
-<h2 id="many-more-fixes">Many More Fixes</h2>
-
-<p>Drill 1.3 includes many other improvements, including enhancements related to querying Hive tables, MongoDB collections and Avro files. Check out the complete list of <a href="https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12313820&amp;version=12332946">fixes and enhancements</a> for more information.</p>
-
-<p>Download the <a href="https://drill.apache.org/download/">Drill 1.3 release</a> now and let us know your thoughts.</p>
-
-<p>Drill On!
-Jacques Nadeau</p>
-
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http://git-wip-us.apache.org/repos/asf/drill-site/blob/d9845dc4/blog/2015/12/14/drill-1.4-released/index.html
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-      <strong>Author:</strong> Jacques Nadeau (PMC Chair and Committer, Apache Drill)<br />
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-    <p>Apache Drill 1.4 (<a href="https://drill.apache.org/download/">available here</a>) includes bug fixes and enhancements from <a href="https://issues.apache.org/jira/secure/ReleaseNote.jspa?version=12332947&amp;projectId=12313820">32 
-JIRAs</a>.</p>
-
-<p>Here&#39;s a list of highlights from this newest version of Drill:</p>
-
-<h2 id="select-with-options">Select With Options</h2>
-
-<p>Queries that change storage plugin configuration options can now be written. For instance, to query the file <code>CO.dat</code>, the following can be used:</p>
-<div class="highlight"><pre><code class="language-text" data-lang="text">SELECT * FROM TABLE(dfs.`/path/to/CO.dat`(type =&gt; &#39;text&#39;));
-</code></pre></div>
-<p>If a version of <code>CO.dat</code> with a header is available, the first entries of the file can be parsed as column names by 
-passing an <code>extractHeader =&gt; true</code> argument. We can also use a pipe symbol, &#39;|&#39;, as the delimiter by passing 
-<code>fieldDelimiter</code>:</p>
-<div class="highlight"><pre><code class="language-text" data-lang="text">SELECT * FROM TABLE(dfs.`/path/to/CO.dat`(type =&gt; &#39;text&#39;, fieldDelimiter =&gt; &#39;|&#39;, extractHeader =&gt; true));
-</code></pre></div>
-<p>Additionally, <code>lineDelimiter</code> can be used to indicate a deliminter for new lines, such as the double pipe, &#39;||&#39;, symbol in this example:</p>
-<div class="highlight"><pre><code class="language-text" data-lang="text">SELECT * FROM TABLE(dfs.`/path/to/CO.dat`(type =&gt; &#39;text&#39;, lineDelimiter =&gt; &#39;||&#39;, fieldDelimiter =&gt; &#39;|&#39;));
-</code></pre></div>
-<h2 id="improved-behavior-for-csv-header-parsing">Improved Behavior For CSV Header Parsing</h2>
-
-<p>When header parsing is enabled, queries to CSV files no longer raise an exception if the indicated column does not 
-exist. Instead, Drill now returns <code>null</code> values for that column.</p>
-
-<h2 id="json-formatting">JSON Formatting</h2>
-
-<p>For more compact results, Drill&#39;s default behavior of pretty-printing JSON can now be changed by setting the variable 
-<code>store.json.writer.uglify</code> to <code>true</code>. As in:</p>
-<div class="highlight"><pre><code class="language-text" data-lang="text">ALTER SESSION SET store.json.writer.uglify = true;
-</code></pre></div>
-<h2 id="better-logging">Better Logging</h2>
-
-<p>SQL query text is now logged to the <code>drillbit.log</code> file.</p>
-
-<h2 id="other-improvements">Other Improvements</h2>
-
-<p>This version also features schema change compatible sorting, better Apache Hive support, and more efficient caching for Parquet file metadata.</p>
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http://git-wip-us.apache.org/repos/asf/drill-site/blob/d9845dc4/blog/2016/02/15/drill-1.5-released.html
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-      <h1 class="post-title">Drill 1.5 Released</h1>
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-    <p class="post-meta">
-    
-    <strong>Authors:</strong>
-    <ul>
-      
-        
-        <li>Jason Altekruse (PMC Member and Committer, Apache Drill)</li>
-      
-        
-        <li>Bridget Bevens (Comitter, MapR Technologies)</li>
-      
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-    
-<strong>Date:</strong> Feb 15, 2016
-</p>
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-  <article class="post-content">
-    <p>Today, we’re happy to announce the availability of Drill 1.5.0, you can dowload it <a href="https://drill.apache.org/download/">here</a>.</p>
-
-<p>The release provides the following bug fixes and improvements.</p>
-
-<h2 id="web-authentication">Web Authentication</h2>
-<p>Drill 1.5 extends Drill user authentication to the Web Console and underlying REST API so administrators can control the extent of access to the Web Console and REST API client applications. Configuration docs are available <a href="https://drill.apache.org/docs/configuring-web-console-and-rest-api-security/">here</a>.</p>
-
-<h2 id="kudu-support">Kudu Support</h2>
-<p>Drill now includes experimental support for querying the Apache Kudu (incubating) scalable columnar database.</p>
-
-<h2 id="improved-memory-allocator">Improved Memory Allocator</h2>
-<p>Drill uses a new allocator that improves an operator’s use of direct memory and tracks the memory use more accurately. See the <a href="https://drill.apache.org/docs/configuring-drill-memory/">Configuring Drill Memory</a> doc page for more info.</p>
-
-<h2 id="configurable-caching-of-hive-metadata">Configurable Caching of Hive Metadata</h2>
-<p>You can now configure the TTL for the Hive metadata client cache depending on how frequently the Hive metadata is updated. See the <a href="https://drill.apache.org/docs/hive-metadata-caching/">Hive Metadata Caching</a> doc page for more info.</p>
-
-<p>A complete list of JIRAs resolved in the 1.5.0 release can be found <a href="https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12313820&amp;version=12332948">here</a></p>
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http://git-wip-us.apache.org/repos/asf/drill-site/blob/d9845dc4/blog/2016/02/16/drill-1.5-released/index.html
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-
-<p>Drill uses a new allocator that improves an operator’s use of direct memory and tracks the memory use more accurately. See the <a href="/docs/configuring-drill-memory/">Configuring Drill Memory</a> doc page for more info.  </p>
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-<h2 id="configurable-caching-of-hive-metadata">Configurable Caching of Hive Metadata</h2>
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-<p>You can now configure the TTL for the Hive metadata client cache depending on how frequently the Hive metadata is updated. See the <a href="/docs/hive-metadata-caching/">Hive Metadata Caching</a> doc page for more info.</p>
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-<p>A complete list of JIRAs resolved in the 1.5.0 release can be found <a href="https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12313820&amp;version=12332948">here</a>.</p>
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http://git-wip-us.apache.org/repos/asf/drill-site/blob/d9845dc4/blog/2016/03/16/drill-1.6-released/index.html
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-<p>This feature is useful in a multi-tier architecture where queries must run as the end user instead of the application user. See <a href="/docs/configuring-inbound-impersonation/">Configuring Inbound Impersonation</a>.</p>
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-<p>The window function frame clause now supports additional custom frames. See <a href="/docs/sql-window-functions-introduction/#syntax">Window Function Syntax</a>. </p>
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-<p>A complete list of JIRAs resolved in the 1.6.0 release can be found <a href="https://issues.apache.org/jira/secure/ReleaseNote.jspa?version=12334766&amp;styleName=Html&amp;projectId=12313820&amp;Create=Create&amp;atl_token=A5KQ-2QAV-T4JA-FDED%7C9ec2112379f0ae5d2b67a8cbd2626bcde62b41cd%7Clout">here</a>.</p>
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http://git-wip-us.apache.org/repos/asf/drill-site/blob/d9845dc4/blog/2016/06/28/drill-1.7-released/index.html
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-<p>The release provides the following bug fixes and improvements:</p>
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-<h2 id="monitoring-via-jmx">Monitoring via JMX</h2>
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-<p>You can access Drill system-level metrics, collected by JMX, through the Metrics page in the Drill Web Console or a remote JMX monitoring tool. See <a href="https://drill.apache.org/docs/monitoring-metrics/">Monitoring Metrics</a>. </p>
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-<p>Drill automatically converts the Hive CHAR data type to VARCHAR. You no longer need to cast the Hive CHAR data type to VARCHAR when you query Hive tables. See <a href="https://drill.apache.org/docs/hive-to-drill-data-type-mapping/">Hive-to-Drill Data Type Mapping</a>.  </p>
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http://git-wip-us.apache.org/repos/asf/drill-site/blob/d9845dc4/blog/2016/08/30/drill-1.8-released/index.html
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-<p>Drill now applies partition pruning to the metadata cache file. See <a href="https://drill.apache.org/docs/partition-pruning-introduction/">Partition Pruning Introduction</a> and <a href="https://drill.apache.org/docs/optimizing-parquet-metadata-reading/">Optimizing Parquet Metadata Reading</a>. </p>
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-<p>You can include the new IF EXISTS parameter with the DROP TABLE and DROP VIEW commands to prevent Drill from returning error messages when a table or view does not exist. See <a href="https://drill.apache.org/docs/drop-table/">DROP TABLE</a> and <a href="https://drill.apache.org/docs/drop-view/">DROP VIEW</a>.</p>
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-<p>Drill now supports multi-byte delimiters for text files, such as \r\n. See <a href="https://drill.apache.org/docs/plugin-configuration-basics/#list-of-attributes-and-definitions">List of Attributes and Definitions</a>.  </p>
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-<p>New parameters set the minimum filter selectivity estimate to increase the parallelization of the major fragment performing a join. See <a href="https://drill.apache.org/docs/configuration-options-introduction/#system-options">System Options</a>. </p>
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-<p>A complete list of JIRAs resolved in the 1.8.0 release can be found <a href="https://issues.apache.org/jira/secure/ReleaseNote.jspa?version=12334768&amp;styleName=Html&amp;projectId=12313820&amp;Create=Create&amp;atl_token=A5KQ-2QAV-T4JA-FDED%7Ce8d020149d9a6082481af301e563adbe35c76a87%7Clout">here</a>.</p>
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http://git-wip-us.apache.org/repos/asf/drill-site/blob/d9845dc4/blog/2016/11/29/drill-1.9-released/index.html
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-<p>The release provides the following bug fixes and improvements:</p>
-
-<h2 id="asynchronous-parquet-reader">Asynchronous Parquet Reader</h2>
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-<p>The new asynchronous Parquet reader feature improves the performance of the Parquet Scan operator by increasing the speed at which the Parquet reader scans, decompresses, and decodes data. See <a href="/docs/asynchronous-parquet-reader/">Asynchronous Parquet Reader</a>. </p>
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-<p>The new Parquet filter pushdown feature optimizes Drill’s performance by pruning extraneous data from a Parquet file to reduce the amount of data that Drill scans and reads when a query on a Parquet file contains a filter expression. See <a href="/docs/parquet-filter-pushdown/">Parquet Filter Pushdown</a>.</p>
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-<p>The new Dynamic UDF feature enables users to register and unregister UDFs on their own using the new CREATE FUNCTION USING JAR and DROP FUNCTION USING JAR commands. See <a href="/docs/dynamic-udfs/">Dynamic UDFs</a>.  </p>
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