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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.nemo.runtime.master</a></div>
<h2 title="Class BlockManagerMaster" class="title">Class BlockManagerMaster</h2>
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<li>java.lang.Object</li>
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<li>org.apache.nemo.runtime.master.BlockManagerMaster</li>
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<pre>@ThreadSafe
public final class <span class="typeNameLabel">BlockManagerMaster</span>
extends java.lang.Object</pre>
<div class="block">Master-side block manager.
This implementation assumes that only a single user application can submit (maybe multiple) plans through
<a href="scheduler/Scheduler.html" title="interface in org.apache.nemo.runtime.master.scheduler"><code>Scheduler</code></a>.</div>
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<tr class="altColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="BlockManagerMaster.BlockManagerMasterControlMessageReceiver.html" title="class in org.apache.nemo.runtime.master">BlockManagerMaster.BlockManagerMasterControlMessageReceiver</a></span></code></th>
<td class="colLast">
<div class="block">Handler for control messages received.</div>
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<td class="colFirst"><code>static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="BlockManagerMaster.BlockRequestHandler.html" title="class in org.apache.nemo.runtime.master">BlockManagerMaster.BlockRequestHandler</a></span></code></th>
<td class="colLast">
<div class="block">The handler of block location requests.</div>
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<td class="colFirst"><code>static <a href="../common/state/BlockState.State.html" title="enum in org.apache.nemo.runtime.common.state">BlockState.State</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertBlockState(org.apache.nemo.runtime.common.comm.ControlMessage.BlockStateFromExecutor)">convertBlockState</a></span>&#8203;(<a href="../common/comm/ControlMessage.BlockStateFromExecutor.html" title="enum in org.apache.nemo.runtime.common.comm">ControlMessage.BlockStateFromExecutor</a>&nbsp;state)</code></th>
<td class="colLast">
<div class="block">Return the corresponding <a href="../common/state/BlockState.State.html" title="enum in org.apache.nemo.runtime.common.state"><code>BlockState.State</code></a> for the specified <a href="../common/comm/ControlMessage.BlockStateFromExecutor.html" title="enum in org.apache.nemo.runtime.common.comm"><code>ControlMessage.BlockStateFromExecutor</code></a>.</div>
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<td class="colFirst"><code>static <a href="../common/comm/ControlMessage.BlockStateFromExecutor.html" title="enum in org.apache.nemo.runtime.common.comm">ControlMessage.BlockStateFromExecutor</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convertBlockState(org.apache.nemo.runtime.common.state.BlockState.State)">convertBlockState</a></span>&#8203;(<a href="../common/state/BlockState.State.html" title="enum in org.apache.nemo.runtime.common.state">BlockState.State</a>&nbsp;state)</code></th>
<td class="colLast">
<div class="block">Return the corresponding <a href="../common/comm/ControlMessage.BlockStateFromExecutor.html" title="enum in org.apache.nemo.runtime.common.comm"><code>ControlMessage.BlockStateFromExecutor</code></a> for the specified <a href="../common/state/BlockState.State.html" title="enum in org.apache.nemo.runtime.common.state"><code>BlockState.State</code></a>.</div>
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<td class="colFirst"><code>java.util.List&lt;<a href="BlockManagerMaster.BlockRequestHandler.html" title="class in org.apache.nemo.runtime.master">BlockManagerMaster.BlockRequestHandler</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getBlockHandlers(java.lang.String,org.apache.nemo.runtime.common.state.BlockState.State)">getBlockHandlers</a></span>&#8203;(java.lang.String&nbsp;blockIdOrWildcard,
<a href="../common/state/BlockState.State.html" title="enum in org.apache.nemo.runtime.common.state">BlockState.State</a>&nbsp;state)</code></th>
<td class="colLast">
<div class="block">Get handlers of blocks that are in a particular state.</div>
</td>
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<td class="colFirst"><code>java.util.Set&lt;java.lang.String&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getProducerTaskIds(java.lang.String)">getProducerTaskIds</a></span>&#8203;(java.lang.String&nbsp;blockId)</code></th>
<td class="colLast">
<div class="block">Gets the ids of the tasks which already produced or will produce data for a specific block.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onBlockStateChanged(java.lang.String,org.apache.nemo.runtime.common.state.BlockState.State,java.lang.String)">onBlockStateChanged</a></span>&#8203;(java.lang.String&nbsp;blockId,
<a href="../common/state/BlockState.State.html" title="enum in org.apache.nemo.runtime.common.state">BlockState.State</a>&nbsp;newState,
java.lang.String&nbsp;location)</code></th>
<td class="colLast">
<div class="block">Deals with state change of a block.</div>
</td>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onProducerTaskFailed(java.lang.String)">onProducerTaskFailed</a></span>&#8203;(java.lang.String&nbsp;failedTaskId)</code></th>
<td class="colLast">
<div class="block">To be called when a potential producer task fails.</div>
</td>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onProducerTaskScheduled(java.lang.String,java.util.Set)">onProducerTaskScheduled</a></span>&#8203;(java.lang.String&nbsp;taskId,
java.util.Set&lt;java.lang.String&gt;&nbsp;blockIds)</code></th>
<td class="colLast">
<div class="block">To be called when a potential producer task is scheduled.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>java.util.Set&lt;java.lang.String&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#removeWorker(java.lang.String)">removeWorker</a></span>&#8203;(java.lang.String&nbsp;executorId)</code></th>
<td class="colLast">
<div class="block">Manages the block information when a executor is removed.</div>
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<h4>removeWorker</h4>
<pre class="methodSignature">public&nbsp;java.util.Set&lt;java.lang.String&gt;&nbsp;removeWorker&#8203;(java.lang.String&nbsp;executorId)</pre>
<div class="block">Manages the block information when a executor is removed.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>executorId</code> - the id of removed executor.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the set of tasks have to be recomputed.</dd>
</dl>
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<h4>getBlockHandlers</h4>
<pre class="methodSignature">public&nbsp;java.util.List&lt;<a href="BlockManagerMaster.BlockRequestHandler.html" title="class in org.apache.nemo.runtime.master">BlockManagerMaster.BlockRequestHandler</a>&gt;&nbsp;getBlockHandlers&#8203;(java.lang.String&nbsp;blockIdOrWildcard,
<a href="../common/state/BlockState.State.html" title="enum in org.apache.nemo.runtime.common.state">BlockState.State</a>&nbsp;state)</pre>
<div class="block">Get handlers of blocks that are in a particular state.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>blockIdOrWildcard</code> - to query</dd>
<dd><code>state</code> - of the block</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the handlers, empty if none matches.</dd>
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<h4>getProducerTaskIds</h4>
<pre class="methodSignature">public&nbsp;java.util.Set&lt;java.lang.String&gt;&nbsp;getProducerTaskIds&#8203;(java.lang.String&nbsp;blockId)</pre>
<div class="block">Gets the ids of the tasks which already produced or will produce data for a specific block.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>blockId</code> - the id of the block.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the ids of the producer tasks.</dd>
</dl>
</li>
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<h4>onProducerTaskScheduled</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;onProducerTaskScheduled&#8203;(java.lang.String&nbsp;taskId,
java.util.Set&lt;java.lang.String&gt;&nbsp;blockIds)</pre>
<div class="block">To be called when a potential producer task is scheduled.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>taskId</code> - the ID of the scheduled task.</dd>
<dd><code>blockIds</code> - this task will produce</dd>
</dl>
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<h4>onProducerTaskFailed</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;onProducerTaskFailed&#8203;(java.lang.String&nbsp;failedTaskId)</pre>
<div class="block">To be called when a potential producer task fails.
Only the Tasks that have not yet completed (i.e. blocks not yet committed) will call this method.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>failedTaskId</code> - the ID of the task that failed.</dd>
</dl>
</li>
</ul>
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<h4>onBlockStateChanged</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;onBlockStateChanged&#8203;(java.lang.String&nbsp;blockId,
<a href="../common/state/BlockState.State.html" title="enum in org.apache.nemo.runtime.common.state">BlockState.State</a>&nbsp;newState,
@Nullable
java.lang.String&nbsp;location)</pre>
<div class="block">Deals with state change of a block.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>blockId</code> - the id of the block.</dd>
<dd><code>newState</code> - the new state of the block.</dd>
<dd><code>location</code> - the location of the block (e.g., worker id, remote store).
<code>null</code> if not committed or lost.</dd>
</dl>
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<a id="convertBlockState(org.apache.nemo.runtime.common.comm.ControlMessage.BlockStateFromExecutor)">
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<h4>convertBlockState</h4>
<pre class="methodSignature">public static&nbsp;<a href="../common/state/BlockState.State.html" title="enum in org.apache.nemo.runtime.common.state">BlockState.State</a>&nbsp;convertBlockState&#8203;(<a href="../common/comm/ControlMessage.BlockStateFromExecutor.html" title="enum in org.apache.nemo.runtime.common.comm">ControlMessage.BlockStateFromExecutor</a>&nbsp;state)</pre>
<div class="block">Return the corresponding <a href="../common/state/BlockState.State.html" title="enum in org.apache.nemo.runtime.common.state"><code>BlockState.State</code></a> for the specified <a href="../common/comm/ControlMessage.BlockStateFromExecutor.html" title="enum in org.apache.nemo.runtime.common.comm"><code>ControlMessage.BlockStateFromExecutor</code></a>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>state</code> - <a href="../common/comm/ControlMessage.BlockStateFromExecutor.html" title="enum in org.apache.nemo.runtime.common.comm"><code>ControlMessage.BlockStateFromExecutor</code></a></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the corresponding <a href="../common/state/BlockState.State.html" title="enum in org.apache.nemo.runtime.common.state"><code>BlockState.State</code></a></dd>
</dl>
</li>
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<a id="convertBlockState(org.apache.nemo.runtime.common.state.BlockState.State)">
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<h4>convertBlockState</h4>
<pre class="methodSignature">public static&nbsp;<a href="../common/comm/ControlMessage.BlockStateFromExecutor.html" title="enum in org.apache.nemo.runtime.common.comm">ControlMessage.BlockStateFromExecutor</a>&nbsp;convertBlockState&#8203;(<a href="../common/state/BlockState.State.html" title="enum in org.apache.nemo.runtime.common.state">BlockState.State</a>&nbsp;state)</pre>
<div class="block">Return the corresponding <a href="../common/comm/ControlMessage.BlockStateFromExecutor.html" title="enum in org.apache.nemo.runtime.common.comm"><code>ControlMessage.BlockStateFromExecutor</code></a> for the specified <a href="../common/state/BlockState.State.html" title="enum in org.apache.nemo.runtime.common.state"><code>BlockState.State</code></a>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>state</code> - <a href="../common/state/BlockState.State.html" title="enum in org.apache.nemo.runtime.common.state"><code>BlockState.State</code></a></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the corresponding <a href="../common/comm/ControlMessage.BlockStateFromExecutor.html" title="enum in org.apache.nemo.runtime.common.comm"><code>ControlMessage.BlockStateFromExecutor</code></a></dd>
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