| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>R: hint</title> |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> |
| <link rel="stylesheet" type="text/css" href="R.css" /> |
| |
| <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.3/styles/github.min.css"> |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.3/highlight.min.js"></script> |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.3/languages/r.min.js"></script> |
| <script>hljs.initHighlightingOnLoad();</script> |
| </head><body> |
| |
| <table width="100%" summary="page for hint {SparkR}"><tr><td>hint {SparkR}</td><td style="text-align: right;">R Documentation</td></tr></table> |
| |
| <h2>hint</h2> |
| |
| <h3>Description</h3> |
| |
| <p>Specifies execution plan hint and return a new SparkDataFrame. |
| </p> |
| |
| |
| <h3>Usage</h3> |
| |
| <pre> |
| hint(x, name, ...) |
| |
| ## S4 method for signature 'SparkDataFrame,character' |
| hint(x, name, ...) |
| </pre> |
| |
| |
| <h3>Arguments</h3> |
| |
| <table summary="R argblock"> |
| <tr valign="top"><td><code>x</code></td> |
| <td> |
| <p>a SparkDataFrame.</p> |
| </td></tr> |
| <tr valign="top"><td><code>name</code></td> |
| <td> |
| <p>a name of the hint.</p> |
| </td></tr> |
| <tr valign="top"><td><code>...</code></td> |
| <td> |
| <p>optional parameters for the hint.</p> |
| </td></tr> |
| </table> |
| |
| |
| <h3>Value</h3> |
| |
| <p>A SparkDataFrame. |
| </p> |
| |
| |
| <h3>Note</h3> |
| |
| <p>hint since 2.2.0 |
| </p> |
| |
| |
| <h3>See Also</h3> |
| |
| <p>Other SparkDataFrame functions: |
| <code><a href="SparkDataFrame.html">SparkDataFrame-class</a></code>, |
| <code><a href="summarize.html">agg</a>()</code>, |
| <code><a href="alias.html">alias</a>()</code>, |
| <code><a href="arrange.html">arrange</a>()</code>, |
| <code><a href="as.data.frame.html">as.data.frame</a>()</code>, |
| <code><a href="attach.html">attach,SparkDataFrame-method</a></code>, |
| <code><a href="broadcast.html">broadcast</a>()</code>, |
| <code><a href="cache.html">cache</a>()</code>, |
| <code><a href="checkpoint.html">checkpoint</a>()</code>, |
| <code><a href="coalesce.html">coalesce</a>()</code>, |
| <code><a href="collect.html">collect</a>()</code>, |
| <code><a href="columns.html">colnames</a>()</code>, |
| <code><a href="coltypes.html">coltypes</a>()</code>, |
| <code><a href="createOrReplaceTempView.html">createOrReplaceTempView</a>()</code>, |
| <code><a href="crossJoin.html">crossJoin</a>()</code>, |
| <code><a href="cube.html">cube</a>()</code>, |
| <code><a href="dapplyCollect.html">dapplyCollect</a>()</code>, |
| <code><a href="dapply.html">dapply</a>()</code>, |
| <code><a href="describe.html">describe</a>()</code>, |
| <code><a href="dim.html">dim</a>()</code>, |
| <code><a href="distinct.html">distinct</a>()</code>, |
| <code><a href="dropDuplicates.html">dropDuplicates</a>()</code>, |
| <code><a href="nafunctions.html">dropna</a>()</code>, |
| <code><a href="drop.html">drop</a>()</code>, |
| <code><a href="dtypes.html">dtypes</a>()</code>, |
| <code><a href="exceptAll.html">exceptAll</a>()</code>, |
| <code><a href="except.html">except</a>()</code>, |
| <code><a href="explain.html">explain</a>()</code>, |
| <code><a href="filter.html">filter</a>()</code>, |
| <code><a href="first.html">first</a>()</code>, |
| <code><a href="gapplyCollect.html">gapplyCollect</a>()</code>, |
| <code><a href="gapply.html">gapply</a>()</code>, |
| <code><a href="getNumPartitions.html">getNumPartitions</a>()</code>, |
| <code><a href="groupBy.html">group_by</a>()</code>, |
| <code><a href="head.html">head</a>()</code>, |
| <code><a href="histogram.html">histogram</a>()</code>, |
| <code><a href="insertInto.html">insertInto</a>()</code>, |
| <code><a href="intersectAll.html">intersectAll</a>()</code>, |
| <code><a href="intersect.html">intersect</a>()</code>, |
| <code><a href="isLocal.html">isLocal</a>()</code>, |
| <code><a href="isStreaming.html">isStreaming</a>()</code>, |
| <code><a href="join.html">join</a>()</code>, |
| <code><a href="limit.html">limit</a>()</code>, |
| <code><a href="localCheckpoint.html">localCheckpoint</a>()</code>, |
| <code><a href="merge.html">merge</a>()</code>, |
| <code><a href="mutate.html">mutate</a>()</code>, |
| <code><a href="ncol.html">ncol</a>()</code>, |
| <code><a href="nrow.html">nrow</a>()</code>, |
| <code><a href="persist.html">persist</a>()</code>, |
| <code><a href="printSchema.html">printSchema</a>()</code>, |
| <code><a href="randomSplit.html">randomSplit</a>()</code>, |
| <code><a href="rbind.html">rbind</a>()</code>, |
| <code><a href="rename.html">rename</a>()</code>, |
| <code><a href="repartitionByRange.html">repartitionByRange</a>()</code>, |
| <code><a href="repartition.html">repartition</a>()</code>, |
| <code><a href="rollup.html">rollup</a>()</code>, |
| <code><a href="sample.html">sample</a>()</code>, |
| <code><a href="saveAsTable.html">saveAsTable</a>()</code>, |
| <code><a href="schema.html">schema</a>()</code>, |
| <code><a href="selectExpr.html">selectExpr</a>()</code>, |
| <code><a href="select.html">select</a>()</code>, |
| <code><a href="showDF.html">showDF</a>()</code>, |
| <code><a href="show.html">show</a>()</code>, |
| <code><a href="storageLevel.html">storageLevel</a>()</code>, |
| <code><a href="str.html">str</a>()</code>, |
| <code><a href="subset.html">subset</a>()</code>, |
| <code><a href="summary.html">summary</a>()</code>, |
| <code><a href="take.html">take</a>()</code>, |
| <code><a href="toJSON.html">toJSON</a>()</code>, |
| <code><a href="unionByName.html">unionByName</a>()</code>, |
| <code><a href="union.html">union</a>()</code>, |
| <code><a href="unpersist.html">unpersist</a>()</code>, |
| <code><a href="withColumn.html">withColumn</a>()</code>, |
| <code><a href="withWatermark.html">withWatermark</a>()</code>, |
| <code><a href="with.html">with</a>()</code>, |
| <code><a href="write.df.html">write.df</a>()</code>, |
| <code><a href="write.jdbc.html">write.jdbc</a>()</code>, |
| <code><a href="write.json.html">write.json</a>()</code>, |
| <code><a href="write.orc.html">write.orc</a>()</code>, |
| <code><a href="write.parquet.html">write.parquet</a>()</code>, |
| <code><a href="write.stream.html">write.stream</a>()</code>, |
| <code><a href="write.text.html">write.text</a>()</code> |
| </p> |
| |
| |
| <h3>Examples</h3> |
| |
| <pre><code class="r">## Not run: |
| ##D df <- createDataFrame(mtcars) |
| ##D avg_mpg <- mean(groupBy(createDataFrame(mtcars), "cyl"), "mpg") |
| ##D |
| ##D head(join(df, hint(avg_mpg, "broadcast"), df$cyl == avg_mpg$cyl)) |
| ## End(Not run) |
| </code></pre> |
| |
| |
| <hr /><div style="text-align: center;">[Package <em>SparkR</em> version 2.4.7 <a href="00Index.html">Index</a>]</div> |
| </body></html> |