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| <div class="subTitle">org.apache.hadoop.hbase.namequeues</div> |
| <h2 title="Class NamedQueueRecorder" class="title">Class NamedQueueRecorder</h2> |
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| <li>org.apache.hadoop.hbase.namequeues.NamedQueueRecorder</li> |
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| <pre>@InterfaceAudience.Private |
| @InterfaceStability.Evolving |
| public class <a href="../../../../../src-html/org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#line.45">NamedQueueRecorder</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">NamedQueue recorder that maintains various named queues. |
| The service uses LMAX Disruptor to save queue records which are then consumed by |
| a queue and based on the ring buffer size, the available records are then fetched |
| from the queue in thread-safe manner.</div> |
| </li> |
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| <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 com.lmax.disruptor.dsl.Disruptor<<a href="../../../../../org/apache/hadoop/hbase/namequeues/RingBufferEnvelope.html" title="class in org.apache.hadoop.hbase.namequeues">RingBufferEnvelope</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#disruptor">disruptor</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#isInit">isInit</a></span></code> </td> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>private static <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></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#LOCK">LOCK</a></span></code> </td> |
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| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/namequeues/LogEventHandler.html" title="class in org.apache.hadoop.hbase.namequeues">LogEventHandler</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#logEventHandler">logEventHandler</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static <a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html" title="class in org.apache.hadoop.hbase.namequeues">NamedQueueRecorder</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#namedQueueRecorder">namedQueueRecorder</a></span></code> </td> |
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| <th class="colLast" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#NamedQueueRecorder-org.apache.hadoop.conf.Configuration-">NamedQueueRecorder</a></span>(org.apache.hadoop.conf.Configuration conf)</code> |
| <div class="block">Initialize disruptor with configurable ringbuffer size</div> |
| </td> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#addRecord-org.apache.hadoop.hbase.namequeues.NamedQueuePayload-">addRecord</a></span>(<a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueuePayload.html" title="class in org.apache.hadoop.hbase.namequeues">NamedQueuePayload</a> namedQueuePayload)</code> |
| <div class="block">Add various NamedQueue records to ringbuffer.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#clearNamedQueue-org.apache.hadoop.hbase.namequeues.NamedQueuePayload.NamedQueueEvent-">clearNamedQueue</a></span>(<a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueuePayload.NamedQueueEvent.html" title="enum in org.apache.hadoop.hbase.namequeues">NamedQueuePayload.NamedQueueEvent</a> namedQueueEvent)</code> |
| <div class="block">clears queue records from ringbuffer</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#getEventCount-int-">getEventCount</a></span>(int eventCount)</code> </td> |
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| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html" title="class in org.apache.hadoop.hbase.namequeues">NamedQueueRecorder</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#getInstance-org.apache.hadoop.conf.Configuration-">getInstance</a></span>(org.apache.hadoop.conf.Configuration conf)</code> </td> |
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| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/hadoop/hbase/namequeues/response/NamedQueueGetResponse.html" title="class in org.apache.hadoop.hbase.namequeues.response">NamedQueueGetResponse</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#getNamedQueueRecords-org.apache.hadoop.hbase.namequeues.request.NamedQueueGetRequest-">getNamedQueueRecords</a></span>(<a href="../../../../../org/apache/hadoop/hbase/namequeues/request/NamedQueueGetRequest.html" title="class in org.apache.hadoop.hbase.namequeues.request">NamedQueueGetRequest</a> request)</code> |
| <div class="block">Retrieve in memory queue records from ringbuffer</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/hadoop/hbase/namequeues/NamedQueueRecorder.html#persistAll-org.apache.hadoop.hbase.namequeues.NamedQueuePayload.NamedQueueEvent-">persistAll</a></span>(<a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueuePayload.NamedQueueEvent.html" title="enum in org.apache.hadoop.hbase.namequeues">NamedQueuePayload.NamedQueueEvent</a> namedQueueEvent)</code> |
| <div class="block">Add all in memory queue records to system table.</div> |
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| <h4>disruptor</h4> |
| <pre>private final com.lmax.disruptor.dsl.Disruptor<<a href="../../../../../org/apache/hadoop/hbase/namequeues/RingBufferEnvelope.html" title="class in org.apache.hadoop.hbase.namequeues">RingBufferEnvelope</a>> <a href="../../../../../src-html/org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#line.47">disruptor</a></pre> |
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| <pre>private <a href="../../../../../src-html/org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#line.57">NamedQueueRecorder</a>(org.apache.hadoop.conf.Configuration conf)</pre> |
| <div class="block">Initialize disruptor with configurable ringbuffer size</div> |
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| <div class="block">Retrieve in memory queue records from ringbuffer</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>request</code> - namedQueue request with event type</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>queue records from ringbuffer after filter (if applied)</dd> |
| </dl> |
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| <div class="block">clears queue records from ringbuffer</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>namedQueueEvent</code> - type of queue to clear</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if slow log payloads are cleaned up or |
| hbase.regionserver.slowlog.buffer.enabled is not set to true, false if failed to |
| clean up slow logs</dd> |
| </dl> |
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| <pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#line.136">addRecord</a>(<a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueuePayload.html" title="class in org.apache.hadoop.hbase.namequeues">NamedQueuePayload</a> namedQueuePayload)</pre> |
| <div class="block">Add various NamedQueue records to ringbuffer. Based on the type of the event (e.g slowLog), |
| consumer of disruptor ringbuffer will have specific logic. |
| This method is producer of disruptor ringbuffer which is initialized in NamedQueueRecorder |
| constructor.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>namedQueuePayload</code> - namedQueue payload sent by client of ring buffer |
| service</dd> |
| </dl> |
| </li> |
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| <h4>persistAll</h4> |
| <pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/namequeues/NamedQueueRecorder.html#line.150">persistAll</a>(<a href="../../../../../org/apache/hadoop/hbase/namequeues/NamedQueuePayload.NamedQueueEvent.html" title="enum in org.apache.hadoop.hbase.namequeues">NamedQueuePayload.NamedQueueEvent</a> namedQueueEvent)</pre> |
| <div class="block">Add all in memory queue records to system table. The implementors can use system table |
| or direct HDFS file or ZK as persistence system.</div> |
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