| <!doctype html><html><head><meta charset=utf-8><meta http-equiv=x-ua-compatible content="IE=edge"><meta name=viewport content="width=device-width,initial-scale=1"><meta name=description content><meta name=author content><title>Flink Actions</title><link href=../css/bootstrap.css rel=stylesheet><link href=../css/markdown.css rel=stylesheet><link href=../css/katex.min.css rel=stylesheet><link href=../css/iceberg-theme.css rel=stylesheet><link href=../font-awesome-4.7.0/css/font-awesome.min.css rel=stylesheet type=text/css><link href="//fonts.googleapis.com/css?family=Lato:300,400,700,300italic,400italic,700italic" rel=stylesheet type=text/css><link href=../css/termynal.css rel=stylesheet></head><body><head><script>function addAnchor(e){e.insertAdjacentHTML("beforeend",`<a href="#${e.id}" class="anchortag" ariaLabel="Anchor"> 🔗 </a>`)}document.addEventListener("DOMContentLoaded",function(){var e=document.querySelectorAll("h1[id], h2[id], h3[id], h4[id]");e&&e.forEach(addAnchor)})</script></head><nav class="navbar navbar-default" role=navigation><topsection><div class=navbar-fixed-top><div><button type=button class=navbar-toggle data-toggle=collapse data-target=div.sidebar> |
| <span class=sr-only>Toggle navigation</span> |
| <span class=icon-bar></span> |
| <span class=icon-bar></span> |
| <span class=icon-bar></span></button> |
| <a class="page-scroll navbar-brand" href=https://iceberg.apache.org/><img class=top-navbar-logo src=https://iceberg.apache.org/docs/fd-update-javadocs//img/iceberg-logo-icon.png> Apache Iceberg</a></div><div><input type=search class=form-control id=search-input placeholder=Search... maxlength=64 data-hotkeys=s/></div><div class=versions-dropdown><span>1.4.1</span> <i class="fa fa-chevron-down"></i><div class=versions-dropdown-content><ul><li class=versions-dropdown-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../latest>latest</a></li><li class=versions-dropdown-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../1.4.1>1.4.1</a></li><li class=versions-dropdown-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../1.4.0>1.4.0</a></li><li class=versions-dropdown-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../1.3.1>1.3.1</a></li><li class=versions-dropdown-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../1.3.0>1.3.0</a></li><li class=versions-dropdown-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../1.2.1>1.2.1</a></li><li class=versions-dropdown-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../1.2.0>1.2.0</a></li><li class=versions-dropdown-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../1.1.0>1.1.0</a></li><li class=versions-dropdown-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../1.0.0>1.0.0</a></li><li class=versions-dropdown-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../0.14.1>0.14.1</a></li><li class=versions-dropdown-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../0.14.0>0.14.0</a></li><li class=versions-dropdown-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../0.13.2>0.13.2</a></li><li class=versions-dropdown-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../0.13.1>0.13.1</a></li><li class=versions-dropdown-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../0.13.0>0.13.0</a></li><li class=versions-dropdown-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../0.12.1>0.12.1</a></li></ul></div></div></div><div class="navbar-menu-fixed-top navbar-pages-group"><div class=versions-dropdown><div class=topnav-page-selection><a href>Quickstart</a> <i class="fa fa-chevron-down"></i></div class="topnav-page-selection"><div class=versions-dropdown-content><ul><li class=topnav-page-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../../hive-quickstart>Hive</a></li class="topnav-page-selection"><li class=topnav-page-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../../spark-quickstart>Spark</a></li class="topnav-page-selection"></ul></div></div><div class=topnav-page-selection><a id=active href=https://iceberg.apache.org/docs/fd-update-javadocs/../../docs/latest>Docs</a></div><div class=topnav-page-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../../releases>Releases</a></div class="topnav-page-selection"><div class=topnav-page-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../../roadmap>Roadmap</a></div class="topnav-page-selection"><div class=topnav-page-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../../blogs>Blogs</a></div class="topnav-page-selection"><div class=topnav-page-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../../talks>Talks</a></div class="topnav-page-selection"><div class=versions-dropdown><div class=topnav-page-selection><a href>Project</a> <i class="fa fa-chevron-down"></i></div class="topnav-page-selection"><div class=versions-dropdown-content><ul><li class=topnav-page-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../../community>Community</a></li class="topnav-page-selection"><li class=topnav-page-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../../spec>Spec</a></li class="topnav-page-selection"><li class=topnav-page-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../../view-spec>View Spec</a></li class="topnav-page-selection"><li class=topnav-page-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../../puffin-spec>Puffin Spec</a></li class="topnav-page-selection"><li class=topnav-page-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../../multi-engine-support>Multi-Engine Support</a></li class="topnav-page-selection"><li class=topnav-page-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../../how-to-release>How To Release</a></li class="topnav-page-selection"><li class=topnav-page-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../../terms>Terms</a></li class="topnav-page-selection"></ul></div></div><div class=versions-dropdown><div class=topnav-page-selection><a href>Concepts</a> <i class="fa fa-chevron-down"></i></div class="topnav-page-selection"><div class=versions-dropdown-content><ul><li class=topnav-page-selection><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../../catalog>Catalogs</a></li class="topnav-page-selection"></ul></div></div><div class=versions-dropdown><div class=topnav-page-selection><a href>ASF</a> <i class="fa fa-chevron-down"></i></div class="topnav-page-selection"><div class=versions-dropdown-content><ul><li class=topnav-page-selection><a target=_blank href=https://www.apache.org/foundation/sponsorship.html>Donate</a></li class="topnav-page-selection"><li class=topnav-page-selection><a target=_blank href=https://www.apache.org/events/current-event.html>Events</a></li class="topnav-page-selection"><li class=topnav-page-selection><a target=_blank href=https://www.apache.org/licenses/>License</a></li class="topnav-page-selection"><li class=topnav-page-selection><a target=_blank href=https://www.apache.org/security/>Security</a></li class="topnav-page-selection"><li class=topnav-page-selection><a target=_blank href=https://www.apache.org/foundation/thanks.html>Sponsors</a></li class="topnav-page-selection"></ul></div></div><div class=topnav-page-selection><a href=https://github.com/apache/iceberg target=_blank><img src=https://iceberg.apache.org/docs/fd-update-javadocs//img/GitHub-Mark.png target=_blank class=top-navbar-logo></a></div><div class=topnav-page-selection><a href=https://join.slack.com/t/apache-iceberg/shared_invite/zt-2561tq9qr-UtISlHgsdY3Virs3Z2_btQ target=_blank><img src=https://iceberg.apache.org/docs/fd-update-javadocs//img/Slack_Mark_Web.png target=_blank class=top-navbar-logo></a></div></div></topsection></nav><section><div id=search-results-container><ul id=search-results></ul></div></section><body dir=" ltr"><section><div class="grid-container leftnav-and-toc"><div class="sidebar markdown-body"><div id=full><ul><li><a href=../><span>Introduction</span></a></li><li><a class="chevron-toggle collapsed" data-toggle=collapse data-parent=full href=#Tables><span>Tables</span> |
| <i class="fa fa-chevron-right"></i> |
| <i class="fa fa-chevron-down"></i></a></li><div id=Tables class=collapse><ul class=sub-menu><li><a href=../branching/>Branching and Tagging</a></li><li><a href=../configuration/>Configuration</a></li><li><a href=../evolution/>Evolution</a></li><li><a href=../maintenance/>Maintenance</a></li><li><a href=../partitioning/>Partitioning</a></li><li><a href=../performance/>Performance</a></li><li><a href=../reliability/>Reliability</a></li><li><a href=../schemas/>Schemas</a></li></ul></div><li><a class="chevron-toggle collapsed" data-toggle=collapse data-parent=full href=#Spark><span>Spark</span> |
| <i class="fa fa-chevron-right"></i> |
| <i class="fa fa-chevron-down"></i></a></li><div id=Spark class=collapse><ul class=sub-menu><li><a href=../getting-started/>Getting Started</a></li><li><a href=../spark-ddl/>DDL</a></li><li><a href=../spark-procedures/>Procedures</a></li><li><a href=../spark-queries/>Queries</a></li><li><a href=../spark-structured-streaming/>Structured Streaming</a></li><li><a href=../spark-writes/>Writes</a></li></ul></div><li><a class=chevron-toggle data-toggle=collapse data-parent=full href=#Flink><span>Flink</span> |
| <i class="fa fa-chevron-right"></i> |
| <i class="fa fa-chevron-down"></i></a></li><div id=Flink class="collapse in"><ul class=sub-menu><li><a href=../flink/>Flink Getting Started</a></li><li><a href=../flink-connector/>Flink Connector</a></li><li><a href=../flink-ddl/>Flink DDL</a></li><li><a href=../flink-queries/>Flink Queries</a></li><li><a href=../flink-writes/>Flink Writes</a></li><li><a id=active href=../flink-actions/>Flink Actions</a></li><li><a href=../flink-configuration/>Flink Configuration</a></li></ul></div><li><a href=../hive/><span>Hive</span></a></li><li><a target=_blank href=https://trino.io/docs/current/connector/iceberg.html><span>Trino</span></a></li><li><a target=_blank href=https://clickhouse.com/docs/en/engines/table-engines/integrations/iceberg><span>ClickHouse</span></a></li><li><a target=_blank href=https://prestodb.io/docs/current/connector/iceberg.html><span>Presto</span></a></li><li><a target=_blank href=https://docs.dremio.com/data-formats/apache-iceberg/><span>Dremio</span></a></li><li><a target=_blank href=https://docs.starrocks.io/en-us/latest/data_source/catalog/iceberg_catalog><span>StarRocks</span></a></li><li><a target=_blank href=https://docs.aws.amazon.com/athena/latest/ug/querying-iceberg.html><span>Amazon Athena</span></a></li><li><a target=_blank href=https://docs.aws.amazon.com/emr/latest/ReleaseGuide/emr-iceberg-use-cluster.html><span>Amazon EMR</span></a></li><li><a target=_blank href=https://impala.apache.org/docs/build/html/topics/impala_iceberg.html><span>Impala</span></a></li><li><a target=_blank href=https://doris.apache.org/docs/dev/lakehouse/multi-catalog/iceberg><span>Doris</span></a></li><li><a class="chevron-toggle collapsed" data-toggle=collapse data-parent=full href=#Integrations><span>Integrations</span> |
| <i class="fa fa-chevron-right"></i> |
| <i class="fa fa-chevron-down"></i></a></li><div id=Integrations class=collapse><ul class=sub-menu><li><a href=../aws/>AWS</a></li><li><a href=../dell/>Dell</a></li><li><a href=../jdbc/>JDBC</a></li><li><a href=../nessie/>Nessie</a></li></ul></div><li><a class="chevron-toggle collapsed" data-toggle=collapse data-parent=full href=#API><span>API</span> |
| <i class="fa fa-chevron-right"></i> |
| <i class="fa fa-chevron-down"></i></a></li><div id=API class=collapse><ul class=sub-menu><li><a href=../java-api-quickstart/>Java Quickstart</a></li><li><a href=../api/>Java API</a></li><li><a href=../custom-catalog/>Java Custom Catalog</a></li></ul></div><li><a class="chevron-toggle collapsed" data-toggle=collapse data-parent=full href=#Migration><span>Migration</span> |
| <i class="fa fa-chevron-right"></i> |
| <i class="fa fa-chevron-down"></i></a></li><div id=Migration class=collapse><ul class=sub-menu><li><a href=../table-migration/>Overview</a></li><li><a href=../hive-migration/>Hive Migration</a></li><li><a href=../delta-lake-migration/>Delta Lake Migration</a></li></ul></div><li><a href=https://iceberg.apache.org/docs/fd-update-javadocs/../../javadoc/latest><span>Javadoc</span></a></li><li><a target=_blank href=https://py.iceberg.apache.org/><span>PyIceberg</span></a></li></div></div><div id=content class=markdown-body><div class=margin-for-toc><h2 id=rewrite-files-action>Rewrite files action.</h2><p>Iceberg provides API to rewrite small files into large files by submitting Flink batch jobs. The behavior of this Flink action is the same as Spark’s <a href=../maintenance/#compact-data-files>rewriteDataFiles</a>.</p><div class=highlight><pre tabindex=0 style=color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4><code class=language-java data-lang=java><span style=display:flex><span><span style=color:#f92672>import</span> org.apache.iceberg.flink.actions.Actions<span style=color:#f92672>;</span> |
| </span></span><span style=display:flex><span> |
| </span></span><span style=display:flex><span>TableLoader tableLoader <span style=color:#f92672>=</span> TableLoader<span style=color:#f92672>.</span><span style=color:#a6e22e>fromHadoopTable</span><span style=color:#f92672>(</span><span style=color:#e6db74>"hdfs://nn:8020/warehouse/path"</span><span style=color:#f92672>);</span> |
| </span></span><span style=display:flex><span>Table table <span style=color:#f92672>=</span> tableLoader<span style=color:#f92672>.</span><span style=color:#a6e22e>loadTable</span><span style=color:#f92672>();</span> |
| </span></span><span style=display:flex><span>RewriteDataFilesActionResult result <span style=color:#f92672>=</span> Actions<span style=color:#f92672>.</span><span style=color:#a6e22e>forTable</span><span style=color:#f92672>(</span>table<span style=color:#f92672>)</span> |
| </span></span><span style=display:flex><span> <span style=color:#f92672>.</span><span style=color:#a6e22e>rewriteDataFiles</span><span style=color:#f92672>()</span> |
| </span></span><span style=display:flex><span> <span style=color:#f92672>.</span><span style=color:#a6e22e>execute</span><span style=color:#f92672>();</span> |
| </span></span></code></pre></div><p>For more details of the rewrite files action, please refer to <a href=../../../javadoc/1.4.1/org/apache/iceberg/flink/actions/RewriteDataFilesAction.html>RewriteDataFilesAction</a></p></div><div id=toc class=markdown-body><div id=full><nav id=TableOfContents><ul><li><a href=#rewrite-files-action>Rewrite files action.</a></li></ul></nav></div></div></div></div></section></body><script src=https://iceberg.apache.org/docs/fd-update-javadocs//js/jquery-1.11.0.js></script> |
| <script src=https://iceberg.apache.org/docs/fd-update-javadocs//js/jquery.easing.min.js></script> |
| <script type=text/javascript src=https://iceberg.apache.org/docs/fd-update-javadocs//js/search.js></script> |
| <script src=https://iceberg.apache.org/docs/fd-update-javadocs//js/bootstrap.min.js></script> |
| <script src=https://iceberg.apache.org/docs/fd-update-javadocs//js/iceberg-theme.js></script></html> |
