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| <h2 title="Class NettyRpcServerChannelWritabilityHandler" class="title">Class NettyRpcServerChannelWritabilityHandler</h2> |
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| <li> |
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| <li>org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerAdapter</li> |
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| <li>org.apache.hadoop.hbase.ipc.NettyRpcServerChannelWritabilityHandler</li> |
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| <pre>@InterfaceAudience.Private |
| public class <a href="../../../../../src-html/org/apache/hadoop/hbase/ipc/NettyRpcServerChannelWritabilityHandler.html#line.45">NettyRpcServerChannelWritabilityHandler</a> |
| extends org.apache.hbase.thirdparty.io.netty.channel.ChannelDuplexHandler</pre> |
| <div class="block">Handler to enforce writability protections on our server channels: <br> |
| - Responds to channel writability events, which are triggered when the total pending bytes for a |
| channel passes configured high and low watermarks. When high watermark is exceeded, the channel |
| is setAutoRead(false). This way, we won't accept new requests from the client until some pending |
| outbound bytes are successfully received by the client.<br> |
| - Pre-processes any channel write requests. If the total pending outbound bytes exceeds a fatal |
| threshold, the channel is forcefully closed and the write is set to failed. This handler should |
| be the last handler in the pipeline so that it's the first handler to receive any messages sent |
| to channel.write() or channel.writeAndFlush().</div> |
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| <code>org.apache.hbase.thirdparty.io.netty.channel.ChannelHandler.Sharable</code></li> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
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| <td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/function/BooleanSupplier.html?is-external=true" title="class or interface in java.util.function">BooleanSupplier</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/ipc/NettyRpcServerChannelWritabilityHandler.html#isWritabilityBackpressureEnabled">isWritabilityBackpressureEnabled</a></span></code> </td> |
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| <td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/ipc/MetricsHBaseServer.html" title="class in org.apache.hadoop.hbase.ipc">MetricsHBaseServer</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/ipc/NettyRpcServerChannelWritabilityHandler.html#metrics">metrics</a></span></code> </td> |
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| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/ipc/NettyRpcServerChannelWritabilityHandler.html#pendingBytesFatalThreshold">pendingBytesFatalThreshold</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/ipc/NettyRpcServerChannelWritabilityHandler.html#unwritableStartTime">unwritableStartTime</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/ipc/NettyRpcServerChannelWritabilityHandler.html#writable">writable</a></span></code> </td> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/ipc/NettyRpcServerChannelWritabilityHandler.html#NettyRpcServerChannelWritabilityHandler-org.apache.hadoop.hbase.ipc.MetricsHBaseServer-java.util.function.IntSupplier-java.util.function.BooleanSupplier-">NettyRpcServerChannelWritabilityHandler</a></span>(<a href="../../../../../org/apache/hadoop/hbase/ipc/MetricsHBaseServer.html" title="class in org.apache.hadoop.hbase.ipc">MetricsHBaseServer</a> metrics, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/function/IntSupplier.html?is-external=true" title="class or interface in java.util.function">IntSupplier</a> pendingBytesFatalThreshold, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/function/BooleanSupplier.html?is-external=true" title="class or interface in java.util.function">BooleanSupplier</a> isWritabilityBackpressureEnabled)</code> </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/ipc/NettyRpcServerChannelWritabilityHandler.html#channelWritabilityChanged-org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext-">channelWritabilityChanged</a></span>(org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext ctx)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>private boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/ipc/NettyRpcServerChannelWritabilityHandler.html#handleFatalThreshold-org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext-">handleFatalThreshold</a></span>(org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext ctx)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/ipc/NettyRpcServerChannelWritabilityHandler.html#handleWritabilityChanged-org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext-">handleWritabilityChanged</a></span>(org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext ctx)</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/ipc/NettyRpcServerChannelWritabilityHandler.html#write-org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext-java.lang.Object-org.apache.hbase.thirdparty.io.netty.channel.ChannelPromise-">write</a></span>(org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext ctx, |
| <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> msg, |
| org.apache.hbase.thirdparty.io.netty.channel.ChannelPromise promise)</code> </td> |
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| <code>bind, close, connect, deregister, disconnect, flush, read</code></li> |
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| <code>exceptionCaught, handlerAdded, handlerRemoved</code></li> |
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| <h4>NAME</h4> |
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| <pre><a href="../../../../../src-html/org/apache/hadoop/hbase/ipc/NettyRpcServerChannelWritabilityHandler.html#line.56">NettyRpcServerChannelWritabilityHandler</a>(<a href="../../../../../org/apache/hadoop/hbase/ipc/MetricsHBaseServer.html" title="class in org.apache.hadoop.hbase.ipc">MetricsHBaseServer</a> metrics, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/function/IntSupplier.html?is-external=true" title="class or interface in java.util.function">IntSupplier</a> pendingBytesFatalThreshold, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/function/BooleanSupplier.html?is-external=true" title="class or interface in java.util.function">BooleanSupplier</a> isWritabilityBackpressureEnabled)</pre> |
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| <h4>write</h4> |
| <pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/ipc/NettyRpcServerChannelWritabilityHandler.html#line.64">write</a>(org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext ctx, |
| <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> msg, |
| org.apache.hbase.thirdparty.io.netty.channel.ChannelPromise promise) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>write</code> in interface <code>org.apache.hbase.thirdparty.io.netty.channel.ChannelOutboundHandler</code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>write</code> in class <code>org.apache.hbase.thirdparty.io.netty.channel.ChannelDuplexHandler</code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd> |
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| <a name="channelWritabilityChanged-org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext-"> |
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| <h4>channelWritabilityChanged</h4> |
| <pre>public void <a href="../../../../../src-html/org/apache/hadoop/hbase/ipc/NettyRpcServerChannelWritabilityHandler.html#line.80">channelWritabilityChanged</a>(org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext ctx) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>channelWritabilityChanged</code> in interface <code>org.apache.hbase.thirdparty.io.netty.channel.ChannelInboundHandler</code></dd> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
| <dd><code>channelWritabilityChanged</code> in class <code>org.apache.hbase.thirdparty.io.netty.channel.ChannelInboundHandlerAdapter</code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd> |
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| <h4>handleFatalThreshold</h4> |
| <pre>private boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/ipc/NettyRpcServerChannelWritabilityHandler.html#line.87">handleFatalThreshold</a>(org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext ctx)</pre> |
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| <h4>handleWritabilityChanged</h4> |
| <pre>private void <a href="../../../../../src-html/org/apache/hadoop/hbase/ipc/NettyRpcServerChannelWritabilityHandler.html#line.110">handleWritabilityChanged</a>(org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext ctx)</pre> |
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