| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <!-- NewPage --> |
| <html lang="en"> |
| <head> |
| <!-- Generated by javadoc (1.8.0_181-google-v7) on Mon Jan 27 16:42:30 PST 2020 --> |
| <title>DoFn.BundleFinalizer (Apache Beam 2.20.0-SNAPSHOT)</title> |
| <meta name="date" content="2020-01-27"> |
| <link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style"> |
| <script type="text/javascript" src="../../../../../script.js"></script> |
| </head> |
| <body> |
| <script type="text/javascript"><!-- |
| try { |
| if (location.href.indexOf('is-external=true') == -1) { |
| parent.document.title="DoFn.BundleFinalizer (Apache Beam 2.20.0-SNAPSHOT)"; |
| } |
| } |
| catch(err) { |
| } |
| //--> |
| var methods = {"i0":6}; |
| var tabs = {65535:["t0","All Methods"],2:["t2","Instance Methods"],4:["t3","Abstract Methods"]}; |
| var altColor = "altColor"; |
| var rowColor = "rowColor"; |
| var tableTab = "tableTab"; |
| var activeTableTab = "activeTableTab"; |
| </script> |
| <noscript> |
| <div>JavaScript is disabled on your browser.</div> |
| </noscript> |
| <!-- ========= START OF TOP NAVBAR ======= --> |
| <div class="topNav"><a name="navbar.top"> |
| <!-- --> |
| </a> |
| <div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div> |
| <a name="navbar.top.firstrow"> |
| <!-- --> |
| </a> |
| <ul class="navList" title="Navigation"> |
| <li><a href="../../../../../overview-summary.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../index-all.html">Index</a></li> |
| <li><a href="../../../../../help-doc.html">Help</a></li> |
| </ul> |
| </div> |
| <div class="subNav"> |
| <ul class="navList"> |
| <li><a href="../../../../../org/apache/beam/sdk/transforms/DoFn.BoundedPerElement.html" title="annotation in org.apache.beam.sdk.transforms"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../org/apache/beam/sdk/transforms/DoFn.BundleFinalizer.Callback.html" title="interface in org.apache.beam.sdk.transforms"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../index.html?org/apache/beam/sdk/transforms/DoFn.BundleFinalizer.html" target="_top">Frames</a></li> |
| <li><a href="DoFn.BundleFinalizer.html" target="_top">No Frames</a></li> |
| </ul> |
| <ul class="navList" id="allclasses_navbar_top"> |
| <li><a href="../../../../../allclasses-noframe.html">All Classes</a></li> |
| </ul> |
| <div> |
| <script type="text/javascript"><!-- |
| allClassesLink = document.getElementById("allclasses_navbar_top"); |
| if(window==top) { |
| allClassesLink.style.display = "block"; |
| } |
| else { |
| allClassesLink.style.display = "none"; |
| } |
| //--> |
| </script> |
| </div> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li><a href="#nested.class.summary">Nested</a> | </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a name="skip.navbar.top"> |
| <!-- --> |
| </a></div> |
| <!-- ========= END OF TOP NAVBAR ========= --> |
| <!-- ======== START OF CLASS DATA ======== --> |
| <div class="header"> |
| <div class="subTitle">org.apache.beam.sdk.transforms</div> |
| <h2 title="Interface DoFn.BundleFinalizer" class="title">Interface DoFn.BundleFinalizer</h2> |
| </div> |
| <div class="contentContainer"> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <dl> |
| <dt>Enclosing class:</dt> |
| <dd><a href="../../../../../org/apache/beam/sdk/transforms/DoFn.html" title="class in org.apache.beam.sdk.transforms">DoFn</a><<a href="../../../../../org/apache/beam/sdk/transforms/DoFn.html" title="type parameter in DoFn">InputT</a>,<a href="../../../../../org/apache/beam/sdk/transforms/DoFn.html" title="type parameter in DoFn">OutputT</a>></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre><a href="../../../../../org/apache/beam/sdk/annotations/Experimental.html" title="annotation in org.apache.beam.sdk.annotations">@Experimental</a>(<a href="../../../../../org/apache/beam/sdk/annotations/Experimental.html#value--">value</a>=<a href="../../../../../org/apache/beam/sdk/annotations/Experimental.Kind.html#SPLITTABLE_DO_FN">SPLITTABLE_DO_FN</a>) |
| public static interface <span class="typeNameLabel">DoFn.BundleFinalizer</span></pre> |
| <div class="block">A parameter that is accessible during <a href="../../../../../org/apache/beam/sdk/transforms/DoFn.StartBundle.html" title="annotation in org.apache.beam.sdk.transforms"><code>@StartBundle</code></a>, <a href="../../../../../org/apache/beam/sdk/transforms/DoFn.ProcessElement.html" title="annotation in org.apache.beam.sdk.transforms"><code>@ProcessElement</code></a> and <a href="../../../../../org/apache/beam/sdk/transforms/DoFn.FinishBundle.html" title="annotation in org.apache.beam.sdk.transforms"><code>@FinishBundle</code></a> that allows the caller |
| to register a callback that will be invoked after the bundle has been successfully completed |
| and the runner has commit the output. |
| |
| <p>A common usage would be to perform any acknowledgements required by an external system such |
| as acking messages from a message queue since this callback is only invoked after the output of |
| the bundle has been durably persisted by the runner. |
| |
| <p>Note that a runner may make the output of the bundle available immediately to downstream |
| consumers without waiting for finalization to succeed. For pipelines that are sensitive to |
| duplicate messages, they must perform output deduplication in the pipeline.</div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ======== NESTED CLASS SUMMARY ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="nested.class.summary"> |
| <!-- --> |
| </a> |
| <h3>Nested Class Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Nested Class Summary table, listing nested classes, and an explanation"> |
| <caption><span>Nested Classes</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Interface and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static interface </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/DoFn.BundleFinalizer.Callback.html" title="interface in org.apache.beam.sdk.transforms">DoFn.BundleFinalizer.Callback</a></span></code> |
| <div class="block">An instance of a function that will be invoked after bundle finalization.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.summary"> |
| <!-- --> |
| </a> |
| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/beam/sdk/transforms/DoFn.BundleFinalizer.html#afterBundleCommit-org.joda.time.Instant-org.apache.beam.sdk.transforms.DoFn.BundleFinalizer.Callback-">afterBundleCommit</a></span>(<a href="https://static.javadoc.io/joda-time/joda-time/2.10.3/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a> callbackExpiry, |
| <a href="../../../../../org/apache/beam/sdk/transforms/DoFn.BundleFinalizer.Callback.html" title="interface in org.apache.beam.sdk.transforms">DoFn.BundleFinalizer.Callback</a> callback)</code> |
| <div class="block">The provided function will be called after the runner successfully commits the output of a |
| successful bundle.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="afterBundleCommit-org.joda.time.Instant-org.apache.beam.sdk.transforms.DoFn.BundleFinalizer.Callback-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>afterBundleCommit</h4> |
| <pre>void afterBundleCommit(<a href="https://static.javadoc.io/joda-time/joda-time/2.10.3/org/joda/time/Instant.html?is-external=true" title="class or interface in org.joda.time">Instant</a> callbackExpiry, |
| <a href="../../../../../org/apache/beam/sdk/transforms/DoFn.BundleFinalizer.Callback.html" title="interface in org.apache.beam.sdk.transforms">DoFn.BundleFinalizer.Callback</a> callback)</pre> |
| <div class="block">The provided function will be called after the runner successfully commits the output of a |
| successful bundle. Throwing during finalization represents that bundle finalization may have |
| failed and the runner may choose to attempt finalization again. The provided <code>callbackExpiry</code> controls how long the finalization is valid for before it is garbage |
| collected and no longer able to be invoked. |
| |
| <p>Note that finalization is best effort and it is expected that the external system will |
| self recover state if finalization never happens or consistently fails. For example, a queue |
| based system that requires message acknowledgement would replay messages if that |
| acknowledgement was never received within the provided time bound. |
| |
| <p>See <a href="https://s.apache.org/beam-finalizing-bundles">Apache Beam Portability API: |
| How to Finalize Bundles</a> for further details.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>callbackExpiry</code> - When the finalization callback expires. If the runner cannot commit |
| results and execute the callback within this duration, the callback will not be invoked.</dd> |
| <dd><code>callback</code> - The finalization callback method for the runner to invoke after processing |
| results have been successfully committed.</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| </div> |
| <!-- ========= END OF CLASS DATA ========= --> |
| <!-- ======= START OF BOTTOM NAVBAR ====== --> |
| <div class="bottomNav"><a name="navbar.bottom"> |
| <!-- --> |
| </a> |
| <div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> |
| <a name="navbar.bottom.firstrow"> |
| <!-- --> |
| </a> |
| <ul class="navList" title="Navigation"> |
| <li><a href="../../../../../overview-summary.html">Overview</a></li> |
| <li><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="package-tree.html">Tree</a></li> |
| <li><a href="../../../../../deprecated-list.html">Deprecated</a></li> |
| <li><a href="../../../../../index-all.html">Index</a></li> |
| <li><a href="../../../../../help-doc.html">Help</a></li> |
| </ul> |
| </div> |
| <div class="subNav"> |
| <ul class="navList"> |
| <li><a href="../../../../../org/apache/beam/sdk/transforms/DoFn.BoundedPerElement.html" title="annotation in org.apache.beam.sdk.transforms"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../org/apache/beam/sdk/transforms/DoFn.BundleFinalizer.Callback.html" title="interface in org.apache.beam.sdk.transforms"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../index.html?org/apache/beam/sdk/transforms/DoFn.BundleFinalizer.html" target="_top">Frames</a></li> |
| <li><a href="DoFn.BundleFinalizer.html" target="_top">No Frames</a></li> |
| </ul> |
| <ul class="navList" id="allclasses_navbar_bottom"> |
| <li><a href="../../../../../allclasses-noframe.html">All Classes</a></li> |
| </ul> |
| <div> |
| <script type="text/javascript"><!-- |
| allClassesLink = document.getElementById("allclasses_navbar_bottom"); |
| if(window==top) { |
| allClassesLink.style.display = "block"; |
| } |
| else { |
| allClassesLink.style.display = "none"; |
| } |
| //--> |
| </script> |
| </div> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li><a href="#nested.class.summary">Nested</a> | </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a name="skip.navbar.bottom"> |
| <!-- --> |
| </a></div> |
| <!-- ======== END OF BOTTOM NAVBAR ======= --> |
| </body> |
| </html> |