blob: 88db568ee9de8ec69376d42c0e23f313a32587e2 [file] [log] [blame]
<!DOCTYPE html>
<!-- Generated by pkgdown: do not edit by hand --><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"><meta name="description" content="Invalidates and refreshes all the cached data and metadata of the given table. For performance
reasons, Spark SQL or the external data source library it uses might cache certain metadata about
a table, such as the location of blocks. When those change outside of Spark SQL, users should
call this function to invalidate the cache."><!-- Inform modern browsers that this page supports both dark and light color schemes,
and the page author prefers light. --><meta name="color-scheme" content="dark light"><script>
// If `prefers-color-scheme` is not supported, fall back to light mode.
// i.e. In this case, inject the `light` CSS before the others, with
// no media filter so that it will be downloaded with highest priority.
if (window.matchMedia("(prefers-color-scheme: dark)").media === "not all") {
document.documentElement.style.display = "none";
document.head.insertAdjacentHTML(
"beforeend",
"<link id=\"css\" rel=\"stylesheet\" href=\"https://bootswatch.com/5/flatly/bootstrap.css\" onload=\"document.documentElement.style.display = ''\">"
);
}
</script><title>Invalidates and refreshes all the cached data and metadata of the given table — refreshTable • SparkR</title><script src="../deps/jquery-3.6.0/jquery-3.6.0.min.js"></script><meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"><link href="../deps/bootstrap-5.3.1/bootstrap.min.css" rel="stylesheet"><script src="../deps/bootstrap-5.3.1/bootstrap.bundle.min.js"></script><link href="../deps/font-awesome-6.4.2/css/all.min.css" rel="stylesheet"><link href="../deps/font-awesome-6.4.2/css/v4-shims.min.css" rel="stylesheet"><script src="../deps/headroom-0.11.0/headroom.min.js"></script><script src="../deps/headroom-0.11.0/jQuery.headroom.min.js"></script><script src="../deps/bootstrap-toc-1.0.1/bootstrap-toc.min.js"></script><script src="../deps/clipboard.js-2.0.11/clipboard.min.js"></script><script src="../deps/search-1.0.0/autocomplete.jquery.min.js"></script><script src="../deps/search-1.0.0/fuse.min.js"></script><script src="../deps/search-1.0.0/mark.min.js"></script><!-- Font Awesome icons --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/all.min.css" integrity="sha256-mmgLkCYLUQbXn0B1SRqzHar6dCnv9oZFPEC1g1cwlkk=" crossorigin="anonymous"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/v4-shims.min.css" integrity="sha256-wZjR52fzng1pJHwx4aV2AO3yyTOXrcDW7jBpJtTwVxw=" crossorigin="anonymous"><!-- bootstrap-toc --><script src="https://cdn.rawgit.com/afeld/bootstrap-toc/v1.0.1/dist/bootstrap-toc.min.js"></script><!-- headroom.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/headroom.min.js" integrity="sha256-AsUX4SJE1+yuDu5+mAVzJbuYNPHj/WroHuZ8Ir/CkE0=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script><!-- clipboard.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script><!-- search --><script src="https://cdnjs.cloudflare.com/ajax/libs/fuse.js/6.4.6/fuse.js" integrity="sha512-zv6Ywkjyktsohkbp9bb45V6tEMoWhzFzXis+LrMehmJZZSys19Yxf1dopHx7WzIKxr5tK2dVcYmaCk2uqdjF4A==" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/autocomplete.js/0.38.0/autocomplete.jquery.min.js" integrity="sha512-GU9ayf+66Xx2TmpxqJpliWbT5PiGYxpaG8rfnBEk1LL8l1KGkRShhngwdXK1UgqhAzWpZHSiYPc09/NwDQIGyg==" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mark.js/8.11.1/mark.min.js" integrity="sha512-5CYOlHXGh6QpOFA/TeTylKLWfB3ftPsde7AnmhuitiTX4K5SqCLBeKro6sPS8ilsz1Q4NRx3v8Ko2IBiszzdww==" crossorigin="anonymous"></script><!-- pkgdown --><script src="../pkgdown.js"></script><link href="../extra.css" rel="stylesheet"><meta property="og:title" content="Invalidates and refreshes all the cached data and metadata of the given table — refreshTable"><meta property="og:description" content="Invalidates and refreshes all the cached data and metadata of the given table. For performance
reasons, Spark SQL or the external data source library it uses might cache certain metadata about
a table, such as the location of blocks. When those change outside of Spark SQL, users should
call this function to invalidate the cache."><!-- mathjax --><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script><!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.3/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]--><!-- Flatly Theme - Light --><link id="css-light" rel="stylesheet" href="https://bootswatch.com/5/flatly/bootstrap.css" media="(prefers-color-scheme: light), (prefers-color-scheme: no-preference)"><!-- Darkly Theme - Dark --><link id="css-dark" rel="stylesheet" href="https://bootswatch.com/5/darkly/bootstrap.css" media="(prefers-color-scheme: dark)"><!-- preferably CSS --><link rel="stylesheet" href="../preferably.css"><link id="css-code-light" rel="stylesheet" href="../code-color-scheme-light.css" media="(prefers-color-scheme: light), (prefers-color-scheme: no-preference)"><link id="css-code-dark" rel="stylesheet" href="../code-color-scheme-dark.css" media="(prefers-color-scheme: dark)"><script src="../darkswitch.js"></script></head><body>
<a href="#main" class="visually-hidden-focusable">Skip to contents</a>
<nav class="navbar fixed-top navbar-dark navbar-expand-lg bg-primary"><div class="container">
<a class="external-link navbar-brand" href="https://spark.apache.org/">
<img src="https://spark.apache.org/images/spark-logo-rev.svg" alt="" max-height="100%"></a>
<a class="navbar-brand me-2" href="../index.html">SparkR</a>
<small class="nav-text text-muted me-auto" data-bs-toggle="tooltip" data-bs-placement="bottom" title="">3.5.3</small>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbar" aria-controls="navbar" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div id="navbar" class="collapse navbar-collapse ms-2">
<ul class="navbar-nav me-auto"><li class="active nav-item"><a class="nav-link" href="../reference/index.html">Reference</a></li>
<li class="nav-item dropdown">
<button class="nav-link dropdown-toggle" type="button" id="dropdown-articles" data-bs-toggle="dropdown" aria-expanded="false" aria-haspopup="true">Articles</button>
<ul class="dropdown-menu" aria-labelledby="dropdown-articles"><li><a class="dropdown-item" href="../articles/sparkr-vignettes.html">SparkR - Practical Guide</a></li>
</ul></li>
</ul><form class="form-inline my-2 my-lg-0" role="search">
<input type="search" class="form-control me-sm-2" aria-label="Toggle navigation" name="search-input" data-search-index="../search.json" id="search-input" placeholder="" autocomplete="off"></form>
<ul class="navbar-nav"><li class="nav-item"><form class="form-inline" role="search">
<input class="form-control" type="search" name="search-input" id="search-input" autocomplete="off" aria-label="Search site" placeholder="Search for" data-search-index="../search.json"></form></li>
<li>
<a class="external-link nav-link" id="css-toggle-btn" aria-label="github">
<span class="fas fa fas fa-adjust fa-lg"></span>
</a>
</li>
</ul></div>
</div>
</nav><div class="container template-reference-topic">
<div class="row">
<main id="main" class="col-md-9"><div class="page-header">
<h1>Invalidates and refreshes all the cached data and metadata of the given table</h1>
<div class="d-none name"><code>refreshTable.Rd</code></div>
</div>
<div class="ref-description section level2">
<p>Invalidates and refreshes all the cached data and metadata of the given table. For performance
reasons, Spark SQL or the external data source library it uses might cache certain metadata about
a table, such as the location of blocks. When those change outside of Spark SQL, users should
call this function to invalidate the cache.</p>
</div>
<div class="section level2">
<h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
<div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">refreshTable</span><span class="op">(</span><span class="va">tableName</span><span class="op">)</span></span></code></pre></div>
</div>
<div class="section level2">
<h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>
<dl><dt id="arg-tablename">tableName<a class="anchor" aria-label="anchor" href="#arg-tablename"></a></dt>
<dd><p>the qualified or unqualified name that designates a table. If no database
identifier is provided, it refers to a table in the current database.
The table name can be fully qualified with catalog name since 3.4.0.</p></dd>
</dl></div>
<div class="section level2">
<h2 id="details">Details<a class="anchor" aria-label="anchor" href="#details"></a></h2>
<p>If this table is cached as an InMemoryRelation, drop the original cached version and make the
new version cached lazily.</p>
</div>
<div class="section level2">
<h2 id="note">Note<a class="anchor" aria-label="anchor" href="#note"></a></h2>
<p>since 2.2.0</p>
</div>
<div class="section level2">
<h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2>
<div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="kw">if</span> <span class="op">(</span><span class="cn">FALSE</span><span class="op">)</span> <span class="op">{</span> <span class="co"># \dontrun{</span></span></span>
<span class="r-in"><span><span class="fu"><a href="sparkR.session.html">sparkR.session</a></span><span class="op">(</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu">refreshTable</span><span class="op">(</span><span class="st">"spark_catalog.default.myTable"</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="op">}</span> <span class="co"># }</span></span></span>
</code></pre></div>
</div>
</main><aside class="col-md-3"><nav id="toc" aria-label="Table of contents"><h2>On this page</h2>
</nav></aside></div>
<footer><div class="copyright">
<p></p><p>Developed by <a href="https://www.apache.org/" class="external-link"> The Apache Software Foundation</a>.</p>
</div>
<div class="pkgdown">
<p></p><p>Site built with <a href="https://pkgdown.r-lib.org/" class="external-link">pkgdown</a> 2.1.0.</p>
<p class="preferably">Using <a href="https://preferably.amirmasoudabdol.name/?source=footer" class="external-link">preferably</a> template.</p>
</div>
</footer></div>
</body></html>