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<div class="subTitle">gobblin.data.management.version.finder</div>
<h2 title="Class WatermarkDatasetVersionFinder" class="title">Class WatermarkDatasetVersionFinder</h2>
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<div class="contentContainer">
<ul class="inheritance">
<li><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
<li>
<ul class="inheritance">
<li><a href="../../../../../gobblin/data/management/version/finder/AbstractDatasetVersionFinder.html" title="class in gobblin.data.management.version.finder">gobblin.data.management.version.finder.AbstractDatasetVersionFinder</a>&lt;T&gt;</li>
<li>
<ul class="inheritance">
<li><a href="../../../../../gobblin/data/management/version/finder/DatasetVersionFinder.html" title="class in gobblin.data.management.version.finder">gobblin.data.management.version.finder.DatasetVersionFinder</a>&lt;<a href="../../../../../gobblin/data/management/version/StringDatasetVersion.html" title="class in gobblin.data.management.version">StringDatasetVersion</a>&gt;</li>
<li>
<ul class="inheritance">
<li>gobblin.data.management.version.finder.WatermarkDatasetVersionFinder</li>
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<div class="description">
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<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../../gobblin/data/management/version/finder/VersionFinder.html" title="interface in gobblin.data.management.version.finder">VersionFinder</a>&lt;<a href="../../../../../gobblin/data/management/version/StringDatasetVersion.html" title="class in gobblin.data.management.version">StringDatasetVersion</a>&gt;</dd>
</dl>
<hr>
<br>
<pre>public class <span class="typeNameLabel">WatermarkDatasetVersionFinder</span>
extends <a href="../../../../../gobblin/data/management/version/finder/DatasetVersionFinder.html" title="class in gobblin.data.management.version.finder">DatasetVersionFinder</a>&lt;<a href="../../../../../gobblin/data/management/version/StringDatasetVersion.html" title="class in gobblin.data.management.version">StringDatasetVersion</a>&gt;</pre>
<div class="block">Finds watermarked dataset versions as direct subdirectories of the dataset directory. The watermark is assumed
to be part of the subdirectory name. By default, the watermark is the subdirectory name itself, but a regular
expression can be provided to extract the watermark from the name. The watermarks will be sorted by String
sorting.
<p>
For example, snapshots of a database can be named by the unix timestamp when the snapshot was dumped:
/path/to/snapshots/1436223009-snapshot
/path/to/snapshots/1436234210-snapshot
In this case the versions are 1436223009-snapshot, 1436234210-snapshot. Since the watermark is at the
beginning of the name, the natural string ordering is good enough to sort the snapshots, so no regexp is
required to extract the actual watermark.
</p></div>
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<h3>Field Summary</h3>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../gobblin/data/management/version/finder/WatermarkDatasetVersionFinder.html#LOGGER">LOGGER</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../gobblin/data/management/version/finder/WatermarkDatasetVersionFinder.html#WATERMARK_REGEX_KEY">WATERMARK_REGEX_KEY</a></span></code>&nbsp;</td>
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<h3>Fields inherited from class&nbsp;gobblin.data.management.version.finder.<a href="../../../../../gobblin/data/management/version/finder/AbstractDatasetVersionFinder.html" title="class in gobblin.data.management.version.finder">AbstractDatasetVersionFinder</a></h3>
<code><a href="../../../../../gobblin/data/management/version/finder/AbstractDatasetVersionFinder.html#fs">fs</a></code></li>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../gobblin/data/management/version/finder/WatermarkDatasetVersionFinder.html#WatermarkDatasetVersionFinder-org.apache.hadoop.fs.FileSystem-com.typesafe.config.Config-">WatermarkDatasetVersionFinder</a></span>(<a href="http://hadoop.apache.org/docs/r2.3.0/api/org/apache/hadoop/fs/FileSystem.html?is-external=true" title="class or interface in org.apache.hadoop.fs">FileSystem</a>&nbsp;fs,
<a href="http://typesafehub.github.io/config/latest/api/com/typesafe/config/Config.html?is-external=true" title="class or interface in com.typesafe.config">Config</a>&nbsp;config)</code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../gobblin/data/management/version/finder/WatermarkDatasetVersionFinder.html#WatermarkDatasetVersionFinder-org.apache.hadoop.fs.FileSystem-java.util.Properties-">WatermarkDatasetVersionFinder</a></span>(<a href="http://hadoop.apache.org/docs/r2.3.0/api/org/apache/hadoop/fs/FileSystem.html?is-external=true" title="class or interface in org.apache.hadoop.fs">FileSystem</a>&nbsp;fs,
<a href="https://docs.oracle.com/javase/7/docs/api/java/util/Properties.html?is-external=true" title="class or interface in java.util">Properties</a>&nbsp;props)</code>&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code><a href="../../../../../gobblin/data/management/version/StringDatasetVersion.html" title="class in gobblin.data.management.version">StringDatasetVersion</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../gobblin/data/management/version/finder/WatermarkDatasetVersionFinder.html#getDatasetVersion-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-">getDatasetVersion</a></span>(<a href="http://hadoop.apache.org/docs/r2.3.0/api/org/apache/hadoop/fs/Path.html?is-external=true" title="class or interface in org.apache.hadoop.fs">Path</a>&nbsp;pathRelativeToDatasetRoot,
<a href="http://hadoop.apache.org/docs/r2.3.0/api/org/apache/hadoop/fs/Path.html?is-external=true" title="class or interface in org.apache.hadoop.fs">Path</a>&nbsp;fullPath)</code>
<div class="block">Parse <a href="../../../../../gobblin/data/management/version/DatasetVersion.html" title="interface in gobblin.data.management.version"><code>DatasetVersion</code></a> from the path of a dataset version.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="http://hadoop.apache.org/docs/r2.3.0/api/org/apache/hadoop/fs/Path.html?is-external=true" title="class or interface in org.apache.hadoop.fs">Path</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../gobblin/data/management/version/finder/WatermarkDatasetVersionFinder.html#globVersionPattern--">globVersionPattern</a></span>()</code>
<div class="block">Glob pattern relative to the root of the dataset used to find <a href="http://hadoop.apache.org/docs/r2.3.0/api/org/apache/hadoop/fs/FileStatus.html?is-external=true" title="class or interface in org.apache.hadoop.fs"><code>FileStatus</code></a> for each
dataset version.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;? extends <a href="../../../../../gobblin/data/management/version/FileSystemDatasetVersion.html" title="interface in gobblin.data.management.version">FileSystemDatasetVersion</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../gobblin/data/management/version/finder/WatermarkDatasetVersionFinder.html#versionClass--">versionClass</a></span>()</code>
<div class="block">Should return class of T.</div>
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<h3>Methods inherited from class&nbsp;gobblin.data.management.version.finder.<a href="../../../../../gobblin/data/management/version/finder/DatasetVersionFinder.html" title="class in gobblin.data.management.version.finder">DatasetVersionFinder</a></h3>
<code><a href="../../../../../gobblin/data/management/version/finder/DatasetVersionFinder.html#getDatasetVersion-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.FileStatus-">getDatasetVersion</a></code></li>
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<code><a href="../../../../../gobblin/data/management/version/finder/AbstractDatasetVersionFinder.html#findDatasetVersions-gobblin.dataset.Dataset-">findDatasetVersions</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h3>Methods inherited from interface&nbsp;gobblin.data.management.version.finder.<a href="../../../../../gobblin/data/management/version/finder/VersionFinder.html" title="interface in gobblin.data.management.version.finder">VersionFinder</a></h3>
<code><a href="../../../../../gobblin/data/management/version/finder/VersionFinder.html#findDatasetVersions-gobblin.dataset.Dataset-">findDatasetVersions</a></code></li>
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<h4>LOGGER</h4>
<pre>public static final&nbsp;org.slf4j.Logger LOGGER</pre>
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<h4>WATERMARK_REGEX_KEY</h4>
<pre>public static final&nbsp;<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> WATERMARK_REGEX_KEY</pre>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../constant-values.html#gobblin.data.management.version.finder.WatermarkDatasetVersionFinder.WATERMARK_REGEX_KEY">Constant Field Values</a></dd>
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<h4>WatermarkDatasetVersionFinder</h4>
<pre>public&nbsp;WatermarkDatasetVersionFinder(<a href="http://hadoop.apache.org/docs/r2.3.0/api/org/apache/hadoop/fs/FileSystem.html?is-external=true" title="class or interface in org.apache.hadoop.fs">FileSystem</a>&nbsp;fs,
<a href="https://docs.oracle.com/javase/7/docs/api/java/util/Properties.html?is-external=true" title="class or interface in java.util">Properties</a>&nbsp;props)</pre>
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<h4>WatermarkDatasetVersionFinder</h4>
<pre>public&nbsp;WatermarkDatasetVersionFinder(<a href="http://hadoop.apache.org/docs/r2.3.0/api/org/apache/hadoop/fs/FileSystem.html?is-external=true" title="class or interface in org.apache.hadoop.fs">FileSystem</a>&nbsp;fs,
<a href="http://typesafehub.github.io/config/latest/api/com/typesafe/config/Config.html?is-external=true" title="class or interface in com.typesafe.config">Config</a>&nbsp;config)</pre>
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<h3>Method Detail</h3>
<a name="versionClass--">
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<h4>versionClass</h4>
<pre>public&nbsp;<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;? extends <a href="../../../../../gobblin/data/management/version/FileSystemDatasetVersion.html" title="interface in gobblin.data.management.version">FileSystemDatasetVersion</a>&gt;&nbsp;versionClass()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../gobblin/data/management/version/finder/AbstractDatasetVersionFinder.html#versionClass--">AbstractDatasetVersionFinder</a></code></span></div>
<div class="block">Should return class of T.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../gobblin/data/management/version/finder/VersionFinder.html#versionClass--">versionClass</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../gobblin/data/management/version/finder/VersionFinder.html" title="interface in gobblin.data.management.version.finder">VersionFinder</a>&lt;<a href="../../../../../gobblin/data/management/version/StringDatasetVersion.html" title="class in gobblin.data.management.version">StringDatasetVersion</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../gobblin/data/management/version/finder/AbstractDatasetVersionFinder.html#versionClass--">versionClass</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../gobblin/data/management/version/finder/AbstractDatasetVersionFinder.html" title="class in gobblin.data.management.version.finder">AbstractDatasetVersionFinder</a>&lt;<a href="../../../../../gobblin/data/management/version/StringDatasetVersion.html" title="class in gobblin.data.management.version">StringDatasetVersion</a>&gt;</code></dd>
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<h4>globVersionPattern</h4>
<pre>public&nbsp;<a href="http://hadoop.apache.org/docs/r2.3.0/api/org/apache/hadoop/fs/Path.html?is-external=true" title="class or interface in org.apache.hadoop.fs">Path</a>&nbsp;globVersionPattern()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../gobblin/data/management/version/finder/AbstractDatasetVersionFinder.html#globVersionPattern--">AbstractDatasetVersionFinder</a></code></span></div>
<div class="block">Glob pattern relative to the root of the dataset used to find <a href="http://hadoop.apache.org/docs/r2.3.0/api/org/apache/hadoop/fs/FileStatus.html?is-external=true" title="class or interface in org.apache.hadoop.fs"><code>FileStatus</code></a> for each
dataset version.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../gobblin/data/management/version/finder/AbstractDatasetVersionFinder.html#globVersionPattern--">globVersionPattern</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../gobblin/data/management/version/finder/AbstractDatasetVersionFinder.html" title="class in gobblin.data.management.version.finder">AbstractDatasetVersionFinder</a>&lt;<a href="../../../../../gobblin/data/management/version/StringDatasetVersion.html" title="class in gobblin.data.management.version">StringDatasetVersion</a>&gt;</code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>glob pattern relative to dataset root.</dd>
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<h4>getDatasetVersion</h4>
<pre>public&nbsp;<a href="../../../../../gobblin/data/management/version/StringDatasetVersion.html" title="class in gobblin.data.management.version">StringDatasetVersion</a>&nbsp;getDatasetVersion(<a href="http://hadoop.apache.org/docs/r2.3.0/api/org/apache/hadoop/fs/Path.html?is-external=true" title="class or interface in org.apache.hadoop.fs">Path</a>&nbsp;pathRelativeToDatasetRoot,
<a href="http://hadoop.apache.org/docs/r2.3.0/api/org/apache/hadoop/fs/Path.html?is-external=true" title="class or interface in org.apache.hadoop.fs">Path</a>&nbsp;fullPath)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../gobblin/data/management/version/finder/DatasetVersionFinder.html#getDatasetVersion-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-">DatasetVersionFinder</a></code></span></div>
<div class="block">Parse <a href="../../../../../gobblin/data/management/version/DatasetVersion.html" title="interface in gobblin.data.management.version"><code>DatasetVersion</code></a> from the path of a dataset version.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../gobblin/data/management/version/finder/DatasetVersionFinder.html#getDatasetVersion-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-">getDatasetVersion</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../gobblin/data/management/version/finder/DatasetVersionFinder.html" title="class in gobblin.data.management.version.finder">DatasetVersionFinder</a>&lt;<a href="../../../../../gobblin/data/management/version/StringDatasetVersion.html" title="class in gobblin.data.management.version">StringDatasetVersion</a>&gt;</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>pathRelativeToDatasetRoot</code> - <a href="http://hadoop.apache.org/docs/r2.3.0/api/org/apache/hadoop/fs/Path.html?is-external=true" title="class or interface in org.apache.hadoop.fs"><code>Path</code></a> of dataset version relative to dataset root.</dd>
<dd><code>fullPath</code> - full <a href="http://hadoop.apache.org/docs/r2.3.0/api/org/apache/hadoop/fs/Path.html?is-external=true" title="class or interface in org.apache.hadoop.fs"><code>Path</code></a> of the dataset version.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><a href="../../../../../gobblin/data/management/version/DatasetVersion.html" title="interface in gobblin.data.management.version"><code>DatasetVersion</code></a> for that path.</dd>
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