http://git-wip-us.apache.org/repos/asf/hbase-site/blob/804782f0/devapidocs/org/apache/hadoop/hbase/master/locking/LockProcedure.html ---------------------------------------------------------------------- diff --git a/devapidocs/org/apache/hadoop/hbase/master/locking/LockProcedure.html b/devapidocs/org/apache/hadoop/hbase/master/locking/LockProcedure.html index 139308d..47fe85d 100644 --- a/devapidocs/org/apache/hadoop/hbase/master/locking/LockProcedure.html +++ b/devapidocs/org/apache/hadoop/hbase/master/locking/LockProcedure.html @@ -18,7 +18,7 @@ catch(err) { } //--> -var methods = {"i0":10,"i1":10,"i2":10,"i3":10,"i4":10,"i5":10,"i6":10,"i7":10,"i8":10,"i9":10,"i10":10,"i11":10,"i12":10,"i13":10,"i14":10,"i15":10,"i16":10,"i17":10,"i18":10,"i19":10,"i20":10,"i21":10,"i22":10,"i23":10}; +var methods = {"i0":10,"i1":10,"i2":10,"i3":10,"i4":10,"i5":10,"i6":10,"i7":10,"i8":10,"i9":10,"i10":10,"i11":10,"i12":10,"i13":10,"i14":10,"i15":10,"i16":10,"i17":10,"i18":10,"i19":10,"i20":10,"i21":10,"i22":10}; var tabs = {65535:["t0","All Methods"],2:["t2","Instance Methods"],8:["t4","Concrete Methods"]}; var altColor = "altColor"; var rowColor = "rowColor"; @@ -215,62 +215,58 @@ implements <a href="../../../../../../org/apache/hadoop/hbase/master/procedure/T <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#event">event</a></span></code> </td> </tr> <tr class="altColor"> -<td class="colFirst"><code>private boolean</code></td> -<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#hasLock">hasLock</a></span></code> </td> -</tr> -<tr class="rowColor"> <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicLong.html?is-external=true" title="class or interface in java.util.concurrent.atomic">AtomicLong</a></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#lastHeartBeat">lastHeartBeat</a></span></code> </td> </tr> -<tr class="altColor"> +<tr class="rowColor"> <td class="colFirst"><code>static <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></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#LOCAL_MASTER_LOCKS_TIMEOUT_MS_CONF">LOCAL_MASTER_LOCKS_TIMEOUT_MS_CONF</a></span></code> </td> </tr> -<tr class="rowColor"> +<tr class="altColor"> <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.LockInterface.html" title="interface in org.apache.hadoop.hbase.master.locking">LockProcedure.LockInterface</a></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#lock">lock</a></span></code> </td> </tr> -<tr class="altColor"> +<tr class="rowColor"> <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CountDownLatch.html?is-external=true" title="class or interface in java.util.concurrent">CountDownLatch</a></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#lockAcquireLatch">lockAcquireLatch</a></span></code> </td> </tr> -<tr class="rowColor"> +<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/locking/LockProcedure.html#locked">locked</a></span></code> </td> </tr> -<tr class="altColor"> +<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/master/locking/LockProcedure.html#LOG">LOG</a></span></code> </td> </tr> -<tr class="rowColor"> +<tr class="altColor"> <td class="colFirst"><code>private <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></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#namespace">namespace</a></span></code> </td> </tr> -<tr class="altColor"> +<tr class="rowColor"> <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/master/procedure/TableProcedureInterface.TableOperationType.html" title="enum in org.apache.hadoop.hbase.master.procedure">TableProcedureInterface.TableOperationType</a></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#opType">opType</a></span></code> </td> </tr> -<tr class="rowColor"> +<tr class="altColor"> <td class="colFirst"><code>private boolean</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#recoveredMasterLock">recoveredMasterLock</a></span></code> </td> </tr> -<tr class="altColor"> +<tr class="rowColor"> <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>[]</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#regionInfos">regionInfos</a></span></code> </td> </tr> -<tr class="rowColor"> +<tr class="altColor"> <td class="colFirst"><code>static <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></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#REMOTE_LOCKS_TIMEOUT_MS_CONF">REMOTE_LOCKS_TIMEOUT_MS_CONF</a></span></code> </td> </tr> -<tr class="altColor"> +<tr class="rowColor"> <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#tableName">tableName</a></span></code> </td> </tr> -<tr class="rowColor"> +<tr class="altColor"> <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/procedure2/LockType.html" title="enum in org.apache.hadoop.hbase.procedure2">LockType</a></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#type">type</a></span></code> </td> </tr> -<tr class="altColor"> +<tr class="rowColor"> <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/locking/LockProcedure.html#unlock">unlock</a></span></code> </td> </tr> @@ -408,74 +404,68 @@ implements <a href="../../../../../../org/apache/hadoop/hbase/master/procedure/T </tr> <tr id="i10" class="altColor"> <td class="colFirst"><code>boolean</code></td> -<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#hasLock-org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv-">hasLock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureEnv</a> env)</code> -<div class="block">This is used in conjunction with <a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#holdLock-TEnvironment-"><code>Procedure.holdLock(Object)</code></a>.</div> -</td> -</tr> -<tr id="i11" class="rowColor"> -<td class="colFirst"><code>boolean</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#holdLock-org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv-">holdLock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureEnv</a> env)</code> <div class="block">Used to keep the procedure lock even when the procedure is yielding or suspended.</div> </td> </tr> -<tr id="i12" class="altColor"> +<tr id="i11" class="rowColor"> <td class="colFirst"><code>boolean</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#isLocked--">isLocked</a></span>()</code> </td> </tr> -<tr id="i13" class="rowColor"> +<tr id="i12" class="altColor"> <td class="colFirst"><code>protected void</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#releaseLock-org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv-">releaseLock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureEnv</a> env)</code> <div class="block">The user should override this method, and release lock if necessary.</div> </td> </tr> -<tr id="i14" class="altColor"> +<tr id="i13" class="rowColor"> <td class="colFirst"><code>protected void</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#rollback-org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv-">rollback</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureEnv</a> env)</code> <div class="block">The code to undo what was done by the execute() code.</div> </td> </tr> -<tr id="i15" class="rowColor"> +<tr id="i14" class="altColor"> <td class="colFirst"><code>protected void</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#serializeStateData-org.apache.hadoop.hbase.procedure2.ProcedureStateSerializer-">serializeStateData</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/procedure2/ProcedureStateSerializer.html" title="interface in org.apache.hadoop.hbase.procedure2">ProcedureStateSerializer</a> serializer)</code> <div class="block">The user-level code of the procedure may have some state to persist (e.g.</div> </td> </tr> -<tr id="i16" class="altColor"> +<tr id="i15" class="rowColor"> <td class="colFirst"><code>protected boolean</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#setTimeoutFailure-org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv-">setTimeoutFailure</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureEnv</a> env)</code> <div class="block">Re run the procedure after every timeout to write new WAL entries so we don't hold back old WALs.</div> </td> </tr> -<tr id="i17" class="rowColor"> +<tr id="i16" class="altColor"> <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.LockInterface.html" title="interface in org.apache.hadoop.hbase.master.locking">LockProcedure.LockInterface</a></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#setupLock--">setupLock</a></span>()</code> </td> </tr> -<tr id="i18" class="altColor"> +<tr id="i17" class="rowColor"> <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.LockInterface.html" title="interface in org.apache.hadoop.hbase.master.locking">LockProcedure.LockInterface</a></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#setupNamespaceLock--">setupNamespaceLock</a></span>()</code> </td> </tr> -<tr id="i19" class="rowColor"> +<tr id="i18" class="altColor"> <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.LockInterface.html" title="interface in org.apache.hadoop.hbase.master.locking">LockProcedure.LockInterface</a></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#setupRegionLock--">setupRegionLock</a></span>()</code> </td> </tr> -<tr id="i20" class="altColor"> +<tr id="i19" class="rowColor"> <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.LockInterface.html" title="interface in org.apache.hadoop.hbase.master.locking">LockProcedure.LockInterface</a></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#setupTableLock--">setupTableLock</a></span>()</code> </td> </tr> -<tr id="i21" class="rowColor"> +<tr id="i20" class="altColor"> <td class="colFirst"><code>protected void</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#toStringClassDetails-java.lang.StringBuilder-">toStringClassDetails</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a> builder)</code> <div class="block">Extend the toString() information with the procedure details e.g.</div> </td> </tr> -<tr id="i22" class="altColor"> +<tr id="i21" class="rowColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#unlock-org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv-">unlock</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureEnv</a> env)</code> </td> </tr> -<tr id="i23" class="rowColor"> +<tr id="i22" class="altColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/locking/LockProcedure.html#updateHeartBeat--">updateHeartBeat</a></span>()</code> <div class="block">Updates timeout deadline for the lock.</div> @@ -487,7 +477,7 @@ implements <a href="../../../../../../org/apache/hadoop/hbase/master/procedure/T <!-- --> </a> <h3>Methods inherited from class org.apache.hadoop.hbase.procedure2.<a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a></h3> -<code><a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#addStackIndex-int-">addStackIndex</a>, <a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#afterReplay-TEnvironment-">afterReplay</a>, <a 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A lock can be anything, + and it is up to the implementor. The Procedure Framework will call this method just before it + invokes <a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#execute-TEnvironment-"><code>Procedure.execute(Object)</code></a>. It calls <a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#releaseLock-TEnvironment-"><code>Procedure.releaseLock(Object)</code></a> after the call to + execute. + <p/> + If you need to hold the lock for the life of the Procedure -- i.e. you do not want any other + Procedure interfering while this Procedure is running, see <a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#holdLock-TEnvironment-"><code>Procedure.holdLock(Object)</code></a>. + <p/> + Example: in our Master we can execute request in parallel for different tables. We can create + t1 and create t2 and these creates can be executed at the same time. Anything else on t1/t2 is + queued waiting that specific table create to happen. + <p/> + There are 3 LockState: + <ul> + <li>LOCK_ACQUIRED should be returned when the proc has the lock and the proc is ready to + execute.</li> + <li>LOCK_YIELD_WAIT should be returned when the proc has not the lock and the framework should + take care of readding the procedure back to the runnable set for retry</li> + <li>LOCK_EVENT_WAIT should be returned when the proc has not the lock and someone will take + care of readding the procedure back to the runnable set when the lock is available.</li> + </ul></div> <dl> <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> <dd><code><a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#acquireLock-TEnvironment-">acquireLock</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a><<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureEnv</a>></code></dd> @@ -1034,7 +1015,7 @@ implements <a href="../../../../../../org/apache/hadoop/hbase/master/procedure/T <ul class="blockList"> <li class="blockList"> <h4>releaseLock</h4> -<pre>protected void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/locking/LockProcedure.html#line.322">releaseLock</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureEnv</a> env)</pre> +<pre>protected void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/locking/LockProcedure.html#line.319">releaseLock</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureEnv</a> env)</pre> <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#releaseLock-TEnvironment-">Procedure</a></code></span></div> <div class="block">The user should override this method, and release lock if necessary.</div> <dl> @@ -1049,7 +1030,7 @@ implements <a href="../../../../../../org/apache/hadoop/hbase/master/procedure/T <ul class="blockList"> <li class="blockList"> <h4>beforeReplay</h4> -<pre>protected void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/locking/LockProcedure.html#line.334">beforeReplay</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureEnv</a> env)</pre> +<pre>protected void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/locking/LockProcedure.html#line.330">beforeReplay</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureEnv</a> env)</pre> <div class="block">On recovery, re-execute from start to acquire the locks. 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href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#hasLock-TEnvironment-"><code>Procedure.hasLock(Object)</code></a> if you want to hold the lock for life - of the Procedure.</div> +<div class="block">Used to keep the procedure lock even when the procedure is yielding or suspended.</div> <dl> <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> <dd><code><a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#holdLock-TEnvironment-">holdLock</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a><<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureEnv</a>></code></dd> <dt><span class="returnLabel">Returns:</span></dt> <dd>true if the procedure should hold on the lock until completionCleanup()</dd> -<dt><span 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If <a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#holdLock-TEnvironment-"><code>Procedure.holdLock(Object)</code></a> - returns true, the procedure executor will call acquireLock() once and thereafter - not call <a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#releaseLock-TEnvironment-"><code>Procedure.releaseLock(Object)</code></a> until the Procedure is done (Normally, it calls - release/acquire around each invocation of <a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#execute-TEnvironment-"><code>Procedure.execute(Object)</code></a>.</div> -<dl> -<dt><span class="overrideSpecifyLabel">Overrides:</span></dt> -<dd><code><a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#hasLock-TEnvironment-">hasLock</a></code> in class <code><a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html" title="class in org.apache.hadoop.hbase.procedure2">Procedure</a><<a href="../../../../../../org/apache/hadoop/hbase/master/procedure/MasterProcedureEnv.html" title="class in org.apache.hadoop.hbase.master.procedure">MasterProcedureEnv</a>></code></dd> -<dt><span class="returnLabel">Returns:</span></dt> -<dd>true if the procedure has the lock, false otherwise.</dd> -<dt><span class="seeLabel">See Also:</span></dt> -<dd><a href="../../../../../../org/apache/hadoop/hbase/procedure2/Procedure.html#holdLock-TEnvironment-"><code>Procedure.holdLock(Object)</code></a></dd> </dl> </li> </ul>
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