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| <h2 title="Class ClusterStatusPublisher" class="title">Class ClusterStatusPublisher</h2> |
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| <pre>@InterfaceAudience.Private |
| public class <a href="../../../../../src-html/org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#line.78">ClusterStatusPublisher</a> |
| extends <a href="../../../../../org/apache/hadoop/hbase/ScheduledChore.html" title="class in org.apache.hadoop.hbase">ScheduledChore</a></pre> |
| <div class="block">Class to publish the cluster status to the client. This allows them to know immediately |
| the dead region servers, hence to cut the connection they have with them, eventually stop |
| waiting on the socket. This improves the mean time to recover, and as well allows to increase |
| on the client the different timeouts, as the dead servers will be detected separately.</div> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
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| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.MulticastPublisher.html" title="class in org.apache.hadoop.hbase.master">ClusterStatusPublisher.MulticastPublisher</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static interface </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.Publisher.html" title="interface in org.apache.hadoop.hbase.master">ClusterStatusPublisher.Publisher</a></span></code> </td> |
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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 boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#connected">connected</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#DEFAULT_STATUS_PUBLISH_PERIOD">DEFAULT_STATUS_PUBLISH_PERIOD</a></span></code> </td> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><? extends <a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.Publisher.html" title="interface in org.apache.hadoop.hbase.master">ClusterStatusPublisher.Publisher</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#DEFAULT_STATUS_PUBLISHER_CLASS">DEFAULT_STATUS_PUBLISHER_CLASS</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#lastMessageTime">lastMessageTime</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ConcurrentMap.html?is-external=true" title="class or interface in java.util.concurrent">ConcurrentMap</a><<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#lastSent">lastSent</a></span></code> </td> |
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| <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/ClusterStatusPublisher.html#LOG">LOG</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/master/HMaster.html" title="class in org.apache.hadoop.hbase.master">HMaster</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#master">master</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#MAX_SERVER_PER_MESSAGE">MAX_SERVER_PER_MESSAGE</a></span></code> |
| <div class="block">We want to limit the size of the protobuf message sent, do fit into a single packet.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#messagePeriod">messagePeriod</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#NB_SEND">NB_SEND</a></span></code> |
| <div class="block">If a server dies, we're sending the information multiple times in case a receiver misses the |
| message.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.Publisher.html" title="interface in org.apache.hadoop.hbase.master">ClusterStatusPublisher.Publisher</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#publisher">publisher</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/hadoop/hbase/master/ClusterStatusPublisher.html#STATUS_PUBLISH_PERIOD">STATUS_PUBLISH_PERIOD</a></span></code> |
| <div class="block">The minimum time between two status messages, in milliseconds.</div> |
| </td> |
| </tr> |
| <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/ClusterStatusPublisher.html#STATUS_PUBLISHER_CLASS">STATUS_PUBLISHER_CLASS</a></span></code> |
| <div class="block">The implementation class used to publish the status.</div> |
| </td> |
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| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#ClusterStatusPublisher--">ClusterStatusPublisher</a></span>()</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code> </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#ClusterStatusPublisher-org.apache.hadoop.hbase.master.HMaster-org.apache.hadoop.conf.Configuration-java.lang.Class-">ClusterStatusPublisher</a></span>(<a href="../../../../../org/apache/hadoop/hbase/master/HMaster.html" title="class in org.apache.hadoop.hbase.master">HMaster</a> master, |
| org.apache.hadoop.conf.Configuration conf, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a><? extends <a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.Publisher.html" title="interface in org.apache.hadoop.hbase.master">ClusterStatusPublisher.Publisher</a>> publisherClass)</code> </td> |
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| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#chore--">chore</a></span>()</code> |
| <div class="block">The task to execute on each scheduled execution of the Chore</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>protected void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#cleanup--">cleanup</a></span>()</code> |
| <div class="block">Override to run cleanup tasks when the Chore encounters an error and must stop running</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#generateDeadServersListToSend--">generateDeadServersListToSend</a></span>()</code> |
| <div class="block">Create the dead server to send.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/hadoop/hbase/util/Pair.html" title="class in org.apache.hadoop.hbase.util">Pair</a><<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>,<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>>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#getDeadServers-long-">getDeadServers</a></span>(long since)</code> |
| <div class="block">Get the servers which died since a given timestamp.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>private boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#isConnected--">isConnected</a></span>()</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><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/ClusterStatusPublisher.html#toString--">toString</a></span>()</code> |
| <div class="block">A summation of this chore in human readable format.</div> |
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| <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#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> |
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| <h4>LOG</h4> |
| <pre>private static org.slf4j.Logger <a href="../../../../../src-html/org/apache/hadoop/hbase/master/ClusterStatusPublisher.html#line.79">LOG</a></pre> |
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| <div class="block">The implementation class used to publish the status. Default is null (no publish). |
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| <div class="block">The minimum time between two status messages, in milliseconds.</div> |
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| <div class="block">We want to limit the size of the protobuf message sent, do fit into a single packet. |
| a reasonable size for ip / ethernet is less than 1Kb.</div> |
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| <div class="block">If a server dies, we're sending the information multiple times in case a receiver misses the |
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| org.apache.hadoop.conf.Configuration conf, |
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| <div class="block">A summation of this chore in human readable format. Downstream users should not presume |
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| <div class="block">Create the dead server to send. A dead server is sent NB_SEND times. We send at max |
| MAX_SERVER_PER_MESSAGE at a time. if there are too many dead servers, we send the newly |
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| <div class="block">Get the servers which died since a given timestamp. |
| protected because it can be subclassed by the tests.</div> |
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