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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/10/20 14:53:44 UTC

[45/51] [partial] hbase-site git commit: Published site at 7adf590106826b9e4432cfeee06acdc0ccff8c6e.

http://git-wip-us.apache.org/repos/asf/hbase-site/blob/425db230/devapidocs/org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html
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diff --git a/devapidocs/org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html b/devapidocs/org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html
index 6736cf8..a82645d 100644
--- a/devapidocs/org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html
+++ b/devapidocs/org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html
@@ -18,7 +18,7 @@
     catch(err) {
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+var methods = {"i0":10,"i1":10,"i2":10,"i3":10,"i4":10,"i5":10,"i6":9,"i7":10,"i8":10,"i9":10};
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@@ -50,7 +50,7 @@ var activeTableTab = "activeTableTab";
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 <li><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/ProcedureWALPrettyPrinter.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal"><span class="typeNameLink">Prev&nbsp;Class</span></a></li>
-<li><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
+<li><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureStore.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal"><span class="typeNameLink">Next&nbsp;Class</span></a></li>
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@@ -74,7 +74,7 @@ var activeTableTab = "activeTableTab";
 <div>
 <ul class="subNavList">
 <li>Summary:&nbsp;</li>
-<li><a href="#nested.class.summary">Nested</a>&nbsp;|&nbsp;</li>
+<li>Nested&nbsp;|&nbsp;</li>
 <li><a href="#field.summary">Field</a>&nbsp;|&nbsp;</li>
 <li><a href="#constructor.summary">Constr</a>&nbsp;|&nbsp;</li>
 <li><a href="#method.summary">Method</a></li>
@@ -109,53 +109,33 @@ var activeTableTab = "activeTableTab";
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 <hr>
 <br>
-<pre>class <a href="../../../../../../../src-html/org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#line.47">WALProcedureMap</a>
+<pre>@InterfaceAudience.Private
+class <a href="../../../../../../../src-html/org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#line.51">WALProcedureMap</a>
 extends <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></pre>
-<div class="block">We keep an in-memory map of the procedures sorted by replay order. (see the details in the
- beginning of <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/ProcedureWALFormatReader.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal"><code>ProcedureWALFormatReader</code></a>).
-
- <pre>
-      procedureMap = | A |   | E |   | C |   |   |   |   | G |   |   |
-                       D               B
-      replayOrderHead = C <-> B <-> E <-> D <-> A <-> G
-
-  We also have a lazy grouping by "root procedure", and a list of
-  unlinked procedures. If after reading all the WALs we have unlinked
-  procedures it means that we had a missing WAL or a corruption.
-      rootHead = A <-> D <-> G
-                 B     E
-                 C
-      unlinkFromLinkList = None
- </pre></div>
+<div class="block">This class is used to track the active procedures when loading procedures from proc wal file.
+ <p/>
+ We will read proc wal files from new to old, but when reading a proc wal file, we will still read
+ from top to bottom, so there are two groups of methods for this class.
+ <p/>
+ The first group is <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#add-org.apache.hadoop.hbase.shaded.protobuf.generated.ProcedureProtos.Procedure-"><code>add(ProcedureProtos.Procedure)</code></a> and <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#remove-long-"><code>remove(long)</code></a>. It is used
+ when reading a proc wal file. In these methods, for the same procedure, typically the one comes
+ later should win, please see the comment for
+ <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#isIncreasing-org.apache.hadoop.hbase.shaded.protobuf.generated.ProcedureProtos.Procedure-org.apache.hadoop.hbase.shaded.protobuf.generated.ProcedureProtos.Procedure-"><code>isIncreasing(ProcedureProtos.Procedure, ProcedureProtos.Procedure)</code></a> to see the
+ exceptions.
+ <p/>
+ The second group is <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#merge-org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureMap-"><code>merge(WALProcedureMap)</code></a>. We will have a global
+ <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal"><code>WALProcedureMap</code></a> to hold global the active procedures, and a local <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal"><code>WALProcedureMap</code></a>
+ to hold the active procedures for the current proc wal file. And when we finish reading a proc
+ wal file, we will merge the local one into the global one, by calling the
+ <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#merge-org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureMap-"><code>merge(WALProcedureMap)</code></a> method of the global one and pass the local one in. In this
+ method, for the same procedure, the one comes earlier will win, as we read the proc wal files
+ from new to old(the reverse order).</div>
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 <div class="summary">
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-<!-- ======== NESTED CLASS SUMMARY ======== -->
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-</a>
-<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>private static class&nbsp;</code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a></span></code>&nbsp;</td>
-</tr>
-<tr class="rowColor">
-<td class="colFirst"><code>private static class&nbsp;</code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.EntryIterator.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.EntryIterator</a></span></code>&nbsp;</td>
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 <!-- =========== FIELD SUMMARY =========== -->
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@@ -169,36 +149,20 @@ extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html
 <th class="colLast" scope="col">Field and Description</th>
 </tr>
 <tr class="altColor">
-<td class="colFirst"><code>private <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a></code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#childUnlinkedHead">childUnlinkedHead</a></span></code>&nbsp;</td>
-</tr>
-<tr class="rowColor">
 <td class="colFirst"><code>private static org.slf4j.Logger</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#LOG">LOG</a></span></code>&nbsp;</td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <td class="colFirst"><code>private long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#maxModifiedProcId">maxModifiedProcId</a></span></code>&nbsp;</td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <td class="colFirst"><code>private long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#minModifiedProcId">minModifiedProcId</a></span></code>&nbsp;</td>
 </tr>
-<tr class="altColor">
-<td class="colFirst"><code>private <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a>[]</code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#procedureMap">procedureMap</a></span></code>&nbsp;</td>
-</tr>
-<tr class="rowColor">
-<td class="colFirst"><code>private <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a></code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#replayOrderHead">replayOrderHead</a></span></code>&nbsp;</td>
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-<td class="colFirst"><code>private <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a></code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#replayOrderTail">replayOrderTail</a></span></code>&nbsp;</td>
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 <tr class="rowColor">
-<td class="colFirst"><code>private <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a></code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#rootHead">rootHead</a></span></code>&nbsp;</td>
+<td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>,org.apache.hadoop.hbase.shaded.protobuf.generated.ProcedureProtos.Procedure&gt;</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#procMap">procMap</a></span></code>&nbsp;</td>
 </tr>
 </table>
 </li>
@@ -215,7 +179,7 @@ extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html
 <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/procedure2/store/wal/WALProcedureMap.html#WALProcedureMap-int-">WALProcedureMap</a></span>(int&nbsp;size)</code>&nbsp;</td>
+<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#WALProcedureMap--">WALProcedureMap</a></span>()</code>&nbsp;</td>
 </tr>
 </table>
 </li>
@@ -234,113 +198,46 @@ extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html
 </tr>
 <tr id="i0" class="altColor">
 <td class="colFirst"><code>void</code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#add-org.apache.hadoop.hbase.shaded.protobuf.generated.ProcedureProtos.Procedure-">add</a></span>(org.apache.hadoop.hbase.shaded.protobuf.generated.ProcedureProtos.Procedure&nbsp;procProto)</code>&nbsp;</td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#add-org.apache.hadoop.hbase.shaded.protobuf.generated.ProcedureProtos.Procedure-">add</a></span>(org.apache.hadoop.hbase.shaded.protobuf.generated.ProcedureProtos.Procedure&nbsp;proc)</code>&nbsp;</td>
 </tr>
 <tr id="i1" class="rowColor">
-<td class="colFirst"><code>private <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a></code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#addToLinkList-org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureMap.Entry-org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureMap.Entry-">addToLinkList</a></span>(<a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a>&nbsp;entry,
-             <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a>&nbsp;linkHead)</code>&nbsp;</td>
-</tr>
-<tr id="i2" class="altColor">
-<td class="colFirst"><code>private <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a></code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#addToMap-long-boolean-">addToMap</a></span>(long&nbsp;procId,
-        boolean&nbsp;hasParent)</code>&nbsp;</td>
-</tr>
-<tr id="i3" class="rowColor">
-<td class="colFirst"><code>private void</code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#addToReplayList-org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureMap.Entry-">addToReplayList</a></span>(<a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a>&nbsp;entry)</code>&nbsp;</td>
-</tr>
-<tr id="i4" class="altColor">
-<td class="colFirst"><code>private void</code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#buildGraph--">buildGraph</a></span>()</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/procedure2/store/wal/WALProcedureMap.html#checkReadyToRun-org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureMap.Entry-">checkReadyToRun</a></span>(<a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a>&nbsp;rootEntry)</code>
-<div class="block">(see the comprehensive explanation in the beginning of <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/ProcedureWALFormatReader.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal"><code>ProcedureWALFormatReader</code></a>).</div>
-</td>
-</tr>
-<tr id="i6" class="altColor">
-<td class="colFirst"><code>void</code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#clear--">clear</a></span>()</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/procedure2/store/wal/WALProcedureMap.html#contains-long-">contains</a></span>(long&nbsp;procId)</code>&nbsp;</td>
 </tr>
-<tr id="i8" class="altColor">
-<td class="colFirst"><code><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/ProcedureStore.ProcedureIterator.html" title="interface in org.apache.hadoop.hbase.procedure2.store">ProcedureStore.ProcedureIterator</a></code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#fetchAll--">fetchAll</a></span>()</code>
-<div class="block">Drain this map and return all procedures in it.</div>
-</td>
-</tr>
-<tr id="i9" class="rowColor">
-<td class="colFirst"><code><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/ProcedureStore.ProcedureIterator.html" title="interface in org.apache.hadoop.hbase.procedure2.store">ProcedureStore.ProcedureIterator</a></code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#fetchReady--">fetchReady</a></span>()</code>
-<div class="block">Returns an EntryIterator with the list of procedures ready to be added to the executor.</div>
-</td>
-</tr>
-<tr id="i10" class="altColor">
-<td class="colFirst"><code>private <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a></code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#findLinkListTail-org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureMap.Entry-">findLinkListTail</a></span>(<a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a>&nbsp;linkHead)</code>&nbsp;</td>
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-<tr id="i11" class="rowColor">
-<td class="colFirst"><code>private int</code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#getMapSlot-long-">getMapSlot</a></span>(long&nbsp;procId)</code>&nbsp;</td>
-</tr>
-<tr id="i12" class="altColor">
+<tr id="i2" class="altColor">
 <td class="colFirst"><code>long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#getMaxModifiedProcId--">getMaxModifiedProcId</a></span>()</code>&nbsp;</td>
 </tr>
-<tr id="i13" class="rowColor">
+<tr id="i3" class="rowColor">
 <td class="colFirst"><code>long</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#getMinModifiedProcId--">getMinModifiedProcId</a></span>()</code>&nbsp;</td>
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-<td class="colFirst"><code>private <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a></code></td>
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-<tr id="i15" class="rowColor">
-<td class="colFirst"><code>private <a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.Entry.html" title="class in org.apache.hadoop.hbase.procedure2.store.wal">WALProcedureMap.Entry</a></code></td>
-<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#getProcedure-long-">getProcedure</a></span>(long&nbsp;procId)</code>&nbsp;</td>
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+<tr id="i4" class="altColor">
+<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;org.apache.hadoop.hbase.shaded.protobuf.generated.ProcedureProtos.Procedure&gt;</code></td>
+<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#getProcedures--">getProcedures</a></span>()</code>&nbsp;</td>
 </tr>
-<tr id="i17" class="rowColor">
+<tr id="i5" class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hbase/procedure2/store/wal/WALProcedureMap.html#isEmpty--">isEmpty</a></span>()</code>&nbsp;</td>
 </tr>
-<tr id="i18" class="altColor">
+<tr id="i6" class="altColor">
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