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<div class="subTitle">org.apache.hadoop.hbase.master.janitor</div>
<h2 title="Class CatalogJanitor" class="title">Class CatalogJanitor</h2>
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<ul class="inheritance">
<li><a href="https://docs.oracle.com/javase/8/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="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html" title="class in org.apache.hadoop.hbase">org.apache.hadoop.hbase.ScheduledChore</a></li>
<li>
<ul class="inheritance">
<li>org.apache.hadoop.hbase.master.janitor.CatalogJanitor</li>
</ul>
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<div class="description">
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<dl>
<dt>All Implemented Interfaces:</dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Runnable.html?is-external=true" title="class or interface in java.lang">Runnable</a></dd>
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<pre>@InterfaceAudience.Private
public class <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.75">CatalogJanitor</a>
extends <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html" title="class in org.apache.hadoop.hbase">ScheduledChore</a></pre>
<div class="block">A janitor for the catalog tables. Scans the <code>hbase:meta</code> catalog table on a period.
Makes a lastReport on state of hbase:meta. Looks for unused regions to garbage collect. Scan of
hbase:meta runs if we are NOT in maintenance mode, if we are NOT shutting down, AND if the
assignmentmanager is loaded. Playing it safe, we will garbage collect no-longer needed region
references only if there are no regions-in-transition (RIT).</div>
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</ul>
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<h3>Nested Class Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Nested Class Summary table, listing nested classes, and an explanation">
<caption><span>Nested Classes</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>(package private) static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.SplitParentFirstComparator.html" title="class in org.apache.hadoop.hbase.master.janitor">CatalogJanitor.SplitParentFirstComparator</a></span></code>
<div class="block">Compare HRegionInfos in a way that has split parents sort BEFORE their daughters.</div>
</td>
</tr>
</table>
</li>
</ul>
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<h3>Field Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation">
<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>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicBoolean.html?is-external=true" title="class or interface in java.util.concurrent.atomic">AtomicBoolean</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#alreadyRunning">alreadyRunning</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#DEFAULT_HBASE_CATALOGJANITOR_INTERVAL">DEFAULT_HBASE_CATALOGJANITOR_INTERVAL</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicBoolean.html?is-external=true" title="class or interface in java.util.concurrent.atomic">AtomicBoolean</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#enabled">enabled</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/master/janitor/Report.html" title="class in org.apache.hadoop.hbase.master.janitor">Report</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#lastReport">lastReport</a></span></code>
<div class="block">Saved report from last hbase:meta scan to completion.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#LOG">LOG</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#services">services</a></span></code>&nbsp;</td>
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<h3>Constructor Summary</h3>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colOne" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#CatalogJanitor-org.apache.hadoop.hbase.master.MasterServices-">CatalogJanitor</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a>&nbsp;services)</code>&nbsp;</td>
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<h3>Method Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></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>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>private static <a href="../../../../../../org/apache/hadoop/hbase/util/Pair.html" title="class in org.apache.hadoop.hbase.util">Pair</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#checkDaughterInFs-org.apache.hadoop.hbase.master.MasterServices-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.RegionInfo-">checkDaughterInFs</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a>&nbsp;services,
<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;parent,
<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;daughter)</code>
<div class="block">Checks if a daughter region -- either splitA or splitB -- still holds references to parent.</div>
</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>private static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#checkLog4jProperties--">checkLog4jProperties</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#chore--">chore</a></span>()</code>
<div class="block">The task to execute on each scheduled execution of the Chore</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>private boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#cleanMergeRegion-org.apache.hadoop.hbase.client.RegionInfo-java.util.List-">cleanMergeRegion</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;mergedRegion,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&gt;&nbsp;parents)</code>
<div class="block">If merged region no longer holds reference to the merge regions, archive merge region on hdfs
and perform deleting references in hbase:meta</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>(package private) static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#cleanParent-org.apache.hadoop.hbase.master.MasterServices-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.Result-">cleanParent</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a>&nbsp;services,
<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;parent,
<a href="../../../../../../org/apache/hadoop/hbase/client/Result.html" title="class in org.apache.hadoop.hbase.client">Result</a>&nbsp;rowContent)</code>&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>private boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#cleanParent-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.Result-">cleanParent</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;parent,
<a href="../../../../../../org/apache/hadoop/hbase/client/Result.html" title="class in org.apache.hadoop.hbase.client">Result</a>&nbsp;rowContent)</code>
<div class="block">If daughters no longer hold reference to the parents, delete the parent.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/client/TableDescriptor.html" title="interface in org.apache.hadoop.hbase.client">TableDescriptor</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#getDescriptor-org.apache.hadoop.hbase.TableName-">getDescriptor</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a>&nbsp;tableName)</code>&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#getEnabled--">getEnabled</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/Report.html" title="class in org.apache.hadoop.hbase.master.janitor">Report</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#getLastReport--">getLastReport</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>private static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#hasNoReferences-org.apache.hadoop.hbase.util.Pair-">hasNoReferences</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/util/Pair.html" title="class in org.apache.hadoop.hbase.util">Pair</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>&gt;&nbsp;p)</code>&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#initialChore--">initialChore</a></span>()</code>
<div class="block">Override to run a task before we start looping.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>private static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#isMetaLoaded-org.apache.hadoop.hbase.master.assignment.AssignmentManager-">isMetaLoaded</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html" title="class in org.apache.hadoop.hbase.master.assignment">AssignmentManager</a>&nbsp;am)</code>&nbsp;</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>private static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#isRIT-org.apache.hadoop.hbase.master.assignment.AssignmentManager-">isRIT</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html" title="class in org.apache.hadoop.hbase.master.assignment">AssignmentManager</a>&nbsp;am)</code>&nbsp;</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#main-java.lang.String:A-">main</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;args)</code>
<div class="block">For testing against a cluster.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#scan--">scan</a></span>()</code>
<div class="block">Run janitorial scan of catalog <code>hbase:meta</code> table looking for garbage to collect.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/hbase/master/janitor/Report.html" title="class in org.apache.hadoop.hbase.master.janitor">Report</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#scanForReport--">scanForReport</a></span>()</code>
<div class="block">Scan hbase:meta.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#setEnabled-boolean-">setEnabled</a></span>(boolean&nbsp;enabled)</code>&nbsp;</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#updateAssignmentManagerMetrics--">updateAssignmentManagerMetrics</a></span>()</code>&nbsp;</td>
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<h3>Methods inherited from class&nbsp;org.apache.hadoop.hbase.<a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html" title="class in org.apache.hadoop.hbase">ScheduledChore</a></h3>
<code><a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#cancel--">cancel</a>, <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#cancel-boolean-">cancel</a>, <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#choreForTesting--">choreForTesting</a>, <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#cleanup--">cleanup</a>, <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#getInitialDelay--">getInitialDelay</a>, <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#getName--">getName</a>, <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#getPeriod--">getPeriod</a>, <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#getStopper--">getStopper</a>, <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#getTimeUnit--">getTimeUnit</a>, <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#isInitialChoreComplete--">isInitialChoreComplete</a>, <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#isScheduled--">isScheduled</a>, <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#run--">run</a>, <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#shutdown--">shutdown</a>, <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#shutdown-boolean-">shutdown</a>, <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#toString--">toString</a>, <a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#triggerNow--">triggerNow</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/8/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/8/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/8/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/8/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/8/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/8/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/8/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/8/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/8/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/8/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/8/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>Field Detail</h3>
<a name="DEFAULT_HBASE_CATALOGJANITOR_INTERVAL">
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<h4>DEFAULT_HBASE_CATALOGJANITOR_INTERVAL</h4>
<pre>public static final&nbsp;int <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.77">DEFAULT_HBASE_CATALOGJANITOR_INTERVAL</a></pre>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../../constant-values.html#org.apache.hadoop.hbase.master.janitor.CatalogJanitor.DEFAULT_HBASE_CATALOGJANITOR_INTERVAL">Constant Field Values</a></dd>
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<h4>LOG</h4>
<pre>private static final&nbsp;org.slf4j.Logger <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.79">LOG</a></pre>
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<pre>private final&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicBoolean.html?is-external=true" title="class or interface in java.util.concurrent.atomic">AtomicBoolean</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.81">alreadyRunning</a></pre>
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<pre>private final&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicBoolean.html?is-external=true" title="class or interface in java.util.concurrent.atomic">AtomicBoolean</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.82">enabled</a></pre>
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<h4>services</h4>
<pre>private final&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.83">services</a></pre>
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<h4>lastReport</h4>
<pre>private volatile&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/master/janitor/Report.html" title="class in org.apache.hadoop.hbase.master.janitor">Report</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.89">lastReport</a></pre>
<div class="block">Saved report from last hbase:meta scan to completion. May be stale if having trouble completing
scan. Check its date.</div>
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<h3>Constructor Detail</h3>
<a name="CatalogJanitor-org.apache.hadoop.hbase.master.MasterServices-">
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<h4>CatalogJanitor</h4>
<pre>public&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.91">CatalogJanitor</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a>&nbsp;services)</pre>
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<h4>initialChore</h4>
<pre>protected&nbsp;boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.99">initialChore</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#initialChore--">ScheduledChore</a></code></span></div>
<div class="block">Override to run a task before we start looping.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#initialChore--">initialChore</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html" title="class in org.apache.hadoop.hbase">ScheduledChore</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if initial chore was successful</dd>
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<pre>public&nbsp;boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.111">setEnabled</a>(boolean&nbsp;enabled)</pre>
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<pre>public&nbsp;boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.125">getEnabled</a>()</pre>
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<pre>protected&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.130">chore</a>()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#chore--">ScheduledChore</a></code></span></div>
<div class="block">The task to execute on each scheduled execution of the Chore</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html#chore--">chore</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../org/apache/hadoop/hbase/ScheduledChore.html" title="class in org.apache.hadoop.hbase">ScheduledChore</a></code></dd>
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<h4>isMetaLoaded</h4>
<pre>private static&nbsp;boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.147">isMetaLoaded</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html" title="class in org.apache.hadoop.hbase.master.assignment">AssignmentManager</a>&nbsp;am)</pre>
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<h4>isRIT</h4>
<pre>private static&nbsp;boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.151">isRIT</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/assignment/AssignmentManager.html" title="class in org.apache.hadoop.hbase.master.assignment">AssignmentManager</a>&nbsp;am)</pre>
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<h4>scan</h4>
<pre>public&nbsp;int&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.160">scan</a>()
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Run janitorial scan of catalog <code>hbase:meta</code> table looking for garbage to collect.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>How many items gc'd whether for merge or split. Returns -1 if previous scan is in
progress.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<h4>scanForReport</h4>
<pre>protected&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/master/janitor/Report.html" title="class in org.apache.hadoop.hbase.master.janitor">Report</a>&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.232">scanForReport</a>()
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Scan hbase:meta.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Return generated <a href="../../../../../../org/apache/hadoop/hbase/master/janitor/Report.html" title="class in org.apache.hadoop.hbase.master.janitor"><code>Report</code></a></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<a name="getLastReport--">
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<h4>getLastReport</h4>
<pre>public&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/master/janitor/Report.html" title="class in org.apache.hadoop.hbase.master.janitor">Report</a>&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.242">getLastReport</a>()</pre>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Returns last published Report that comes of last successful scan of hbase:meta.</dd>
</dl>
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</ul>
<a name="cleanMergeRegion-org.apache.hadoop.hbase.client.RegionInfo-java.util.List-">
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<h4>cleanMergeRegion</h4>
<pre>private&nbsp;boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.252">cleanMergeRegion</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;mergedRegion,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&gt;&nbsp;parents)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">If merged region no longer holds reference to the merge regions, archive merge region on hdfs
and perform deleting references in hbase:meta</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if we delete references in merged region on hbase:meta and archive the files on
the file system</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
</dl>
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<h4>cleanParent</h4>
<pre>static&nbsp;boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.321">cleanParent</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a>&nbsp;services,
<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;parent,
<a href="../../../../../../org/apache/hadoop/hbase/client/Result.html" title="class in org.apache.hadoop.hbase.client">Result</a>&nbsp;rowContent)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<h4>cleanParent</h4>
<pre>private&nbsp;boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.375">cleanParent</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;parent,
<a href="../../../../../../org/apache/hadoop/hbase/client/Result.html" title="class in org.apache.hadoop.hbase.client">Result</a>&nbsp;rowContent)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">If daughters no longer hold reference to the parents, delete the parent.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>parent</code> - RegionInfo of split offlined parent</dd>
<dd><code>rowContent</code> - Content of <code>parent</code> row in <code>metaRegionName</code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>True if we removed <code>parent</code> from meta table and from the filesystem.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<h4>hasNoReferences</h4>
<pre>private static&nbsp;boolean&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.385">hasNoReferences</a>(<a href="../../../../../../org/apache/hadoop/hbase/util/Pair.html" title="class in org.apache.hadoop.hbase.util">Pair</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>&gt;&nbsp;p)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>p</code> - A pair where the first boolean says whether or not the daughter region directory
exists in the filesystem and then the second boolean says whether the daughter has
references to the parent.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>True the passed <code>p</code> signifies no references.</dd>
</dl>
</li>
</ul>
<a name="checkDaughterInFs-org.apache.hadoop.hbase.master.MasterServices-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.RegionInfo-">
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<h4>checkDaughterInFs</h4>
<pre>private static&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/util/Pair.html" title="class in org.apache.hadoop.hbase.util">Pair</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Boolean.html?is-external=true" title="class or interface in java.lang">Boolean</a>&gt;&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.397">checkDaughterInFs</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a>&nbsp;services,
<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;parent,
<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&nbsp;daughter)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Checks if a daughter region -- either splitA or splitB -- still holds references to parent.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>parent</code> - Parent region</dd>
<dd><code>daughter</code> - Daughter region</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A pair where the first boolean says whether or not the daughter region directory exists
in the filesystem and then the second boolean says whether the daughter has references
to the parent.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<h4>getDescriptor</h4>
<pre>private&nbsp;<a href="../../../../../../org/apache/hadoop/hbase/client/TableDescriptor.html" title="interface in org.apache.hadoop.hbase.client">TableDescriptor</a>&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.441">getDescriptor</a>(<a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a>&nbsp;tableName)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<h4>updateAssignmentManagerMetrics</h4>
<pre>private&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.445">updateAssignmentManagerMetrics</a>()</pre>
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<h4>checkLog4jProperties</h4>
<pre>private static&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.456">checkLog4jProperties</a>()</pre>
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<h4>main</h4>
<pre>public static&nbsp;void&nbsp;<a href="../../../../../../src-html/org/apache/hadoop/hbase/master/janitor/CatalogJanitor.html#line.474">main</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;args)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">For testing against a cluster. Doesn't have a MasterServices context so does not report on good
vs bad servers.</div>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
</dl>
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