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| <div class="subTitle">org.apache.drill.exec.work.foreman.rm</div> |
| <h2 title="Class EmbeddedQueryQueue" class="title">Class EmbeddedQueryQueue</h2> |
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| <li>org.apache.drill.exec.work.foreman.rm.EmbeddedQueryQueue</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html" title="interface in org.apache.drill.exec.work.foreman.rm">QueryQueue</a></dd> |
| </dl> |
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| <pre>public class <span class="typeNameLabel">EmbeddedQueryQueue</span> |
| 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> |
| implements <a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html" title="interface in org.apache.drill.exec.work.foreman.rm">QueryQueue</a></pre> |
| <div class="block">Query queue to be used in an embedded Drillbit. This queue has scope of only |
| the one Drillbit (not even multiple Drillbits in the same process.) Primarily |
| intended for testing, but may possibly be useful for other embedded |
| applications. |
| <p> |
| Configuration is via config parameters (not via system options as for the |
| distributed queue.) |
| <dl> |
| <dt><tt>drill.queue.embedded.enabled</tt></dt> |
| <dd>Set to true to enable the embedded queue. But, this setting has effect |
| only if the Drillbit is, in fact, embedded.</dd> |
| <dt><tt>drill.queue.embedded.size</tt></dt> |
| <dd>The number of active queries, all others queue. There is no upper limit |
| on the number of queued entries.</dt> |
| <dt><tt>drill.queue.embedded.timeout_ms</tt></dt> |
| <dd>The maximum time a query will wait in the queue before failing.</dd> |
| </dl></div> |
| </li> |
| </ul> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/EmbeddedQueryQueue.EmbeddedQueueLease.html" title="class in org.apache.drill.exec.work.foreman.rm">EmbeddedQueryQueue.EmbeddedQueueLease</a></span></code> </td> |
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| <li class="blockList"><a name="nested.classes.inherited.from.class.org.apache.drill.exec.work.foreman.rm.QueryQueue"> |
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| </a> |
| <h3>Nested classes/interfaces inherited from interface org.apache.drill.exec.work.foreman.rm.<a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html" title="interface in org.apache.drill.exec.work.foreman.rm">QueryQueue</a></h3> |
| <code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.QueryQueueException.html" title="class in org.apache.drill.exec.work.foreman.rm">QueryQueue.QueryQueueException</a>, <a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.QueueLease.html" title="interface in org.apache.drill.exec.work.foreman.rm">QueryQueue.QueueLease</a>, <a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.QueueTimeoutException.html" title="class in org.apache.drill.exec.work.foreman.rm">QueryQueue.QueueTimeoutException</a></code></li> |
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| <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/drill/exec/work/foreman/rm/EmbeddedQueryQueue.html#EMBEDDED_QUEUE">EMBEDDED_QUEUE</a></span></code> </td> |
| </tr> |
| <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/drill/exec/work/foreman/rm/EmbeddedQueryQueue.html#ENABLED">ENABLED</a></span></code> </td> |
| </tr> |
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| <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/drill/exec/work/foreman/rm/EmbeddedQueryQueue.html#QUEUE_SIZE">QUEUE_SIZE</a></span></code> </td> |
| </tr> |
| <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/drill/exec/work/foreman/rm/EmbeddedQueryQueue.html#TIMEOUT_MS">TIMEOUT_MS</a></span></code> </td> |
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| <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/drill/exec/work/foreman/rm/EmbeddedQueryQueue.html#EmbeddedQueryQueue-org.apache.drill.exec.server.DrillbitContext-">EmbeddedQueryQueue</a></span>(<a href="../../../../../../../org/apache/drill/exec/server/DrillbitContext.html" title="class in org.apache.drill.exec.server">DrillbitContext</a> context)</code> </td> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/EmbeddedQueryQueue.html#close--">close</a></span>()</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/EmbeddedQueryQueue.html#defaultQueryMemoryPerNode-double-">defaultQueryMemoryPerNode</a></span>(double cost)</code> |
| <div class="block">Return the amount of memory per node when creating a EXPLAIN |
| query plan.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/EmbeddedQueryQueue.html#enabled--">enabled</a></span>()</code> |
| <div class="block">Determine if the queue is enabled.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.QueueLease.html" title="interface in org.apache.drill.exec.work.foreman.rm">QueryQueue.QueueLease</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/EmbeddedQueryQueue.html#enqueue-org.apache.drill.exec.proto.UserBitShared.QueryId-double-">enqueue</a></span>(<a href="../../../../../../../org/apache/drill/exec/proto/UserBitShared.QueryId.html" title="class in org.apache.drill.exec.proto">UserBitShared.QueryId</a> queryId, |
| double cost)</code> |
| <div class="block">Queue a query.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/EmbeddedQueryQueue.html#minimumOperatorMemory--">minimumOperatorMemory</a></span>()</code> |
| <div class="block">Optional floor on the amount of memory assigned per operator.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/EmbeddedQueryQueue.html#setMemoryPerNode-long-">setMemoryPerNode</a></span>(long memoryPerNode)</code> </td> |
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| <h3>Methods inherited from class 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#toString--" title="class or interface in java.lang">toString</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> |
| </ul> |
| </li> |
| </ul> |
| </li> |
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| </div> |
| <div class="details"> |
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| </a> |
| <h3>Field Detail</h3> |
| <a name="EMBEDDED_QUEUE"> |
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| </a> |
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| <h4>EMBEDDED_QUEUE</h4> |
| <pre>public 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> EMBEDDED_QUEUE</pre> |
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| <h4>ENABLED</h4> |
| <pre>public 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> ENABLED</pre> |
| </li> |
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| <h4>QUEUE_SIZE</h4> |
| <pre>public 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> QUEUE_SIZE</pre> |
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| <h4>TIMEOUT_MS</h4> |
| <pre>public 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> TIMEOUT_MS</pre> |
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| <h3>Constructor Detail</h3> |
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| <h4>EmbeddedQueryQueue</h4> |
| <pre>public EmbeddedQueryQueue(<a href="../../../../../../../org/apache/drill/exec/server/DrillbitContext.html" title="class in org.apache.drill.exec.server">DrillbitContext</a> context)</pre> |
| </li> |
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| <h4>enabled</h4> |
| <pre>public boolean enabled()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html#enabled--">QueryQueue</a></code></span></div> |
| <div class="block">Determine if the queue is enabled.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html#enabled--">enabled</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html" title="interface in org.apache.drill.exec.work.foreman.rm">QueryQueue</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the query is enabled, false otherwise.</dd> |
| </dl> |
| </li> |
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| <h4>setMemoryPerNode</h4> |
| <pre>public void setMemoryPerNode(long memoryPerNode)</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html#setMemoryPerNode-long-">setMemoryPerNode</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html" title="interface in org.apache.drill.exec.work.foreman.rm">QueryQueue</a></code></dd> |
| </dl> |
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| <h4>defaultQueryMemoryPerNode</h4> |
| <pre>public long defaultQueryMemoryPerNode(double cost)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html#defaultQueryMemoryPerNode-double-">QueryQueue</a></code></span></div> |
| <div class="block">Return the amount of memory per node when creating a EXPLAIN |
| query plan. Plans to be executed should get the query memory from |
| the lease, as the lease may adjust the default amount on a per-query |
| basis. This means that the memory used to execute the query may |
| differ from the amount shown in an EXPLAIN plan.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html#defaultQueryMemoryPerNode-double-">defaultQueryMemoryPerNode</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html" title="interface in org.apache.drill.exec.work.foreman.rm">QueryQueue</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>assumed memory per node, in bytes, to use when creating |
| an EXPLAIN plan</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="enqueue-org.apache.drill.exec.proto.UserBitShared.QueryId-double-"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>enqueue</h4> |
| <pre>public <a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.QueueLease.html" title="interface in org.apache.drill.exec.work.foreman.rm">QueryQueue.QueueLease</a> enqueue(<a href="../../../../../../../org/apache/drill/exec/proto/UserBitShared.QueryId.html" title="class in org.apache.drill.exec.proto">UserBitShared.QueryId</a> queryId, |
| double cost) |
| throws <a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.QueueTimeoutException.html" title="class in org.apache.drill.exec.work.foreman.rm">QueryQueue.QueueTimeoutException</a>, |
| <a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.QueryQueueException.html" title="class in org.apache.drill.exec.work.foreman.rm">QueryQueue.QueryQueueException</a></pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html#enqueue-org.apache.drill.exec.proto.UserBitShared.QueryId-double-">QueryQueue</a></code></span></div> |
| <div class="block">Queue a query. The method returns only when the query is admitted for |
| execution. As a result, the calling thread may block up to the configured |
| wait time.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html#enqueue-org.apache.drill.exec.proto.UserBitShared.QueryId-double-">enqueue</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html" title="interface in org.apache.drill.exec.work.foreman.rm">QueryQueue</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>queryId</code> - the query ID</dd> |
| <dd><code>cost</code> - the cost of the query used for cost-based queueing</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the query lease which must be passed to <code>#release(QueueLease)</code> |
| upon query completion</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.QueueTimeoutException.html" title="class in org.apache.drill.exec.work.foreman.rm">QueryQueue.QueueTimeoutException</a></code> - if the query times out waiting to be |
| admitted.</dd> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.QueryQueueException.html" title="class in org.apache.drill.exec.work.foreman.rm">QueryQueue.QueryQueueException</a></code> - for any other error condition.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="close--"> |
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| <h4>close</h4> |
| <pre>public void close()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html#close--">close</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html" title="interface in org.apache.drill.exec.work.foreman.rm">QueryQueue</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>minimumOperatorMemory</h4> |
| <pre>public long minimumOperatorMemory()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html#minimumOperatorMemory--">QueryQueue</a></code></span></div> |
| <div class="block">Optional floor on the amount of memory assigned per operator. |
| This ensures that operators receive a certain amount, separate from |
| any memory slicing. This can oversubscribe node memory if used |
| incorrectly.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html#minimumOperatorMemory--">minimumOperatorMemory</a></code> in interface <code><a href="../../../../../../../org/apache/drill/exec/work/foreman/rm/QueryQueue.html" title="interface in org.apache.drill.exec.work.foreman.rm">QueryQueue</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>minimum per-operator memory, in bytes</dd> |
| </dl> |
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