title: How do I disable pyarrow using data bricks
body: <p>I'm trying to convert a pyspark dataframe to pandas data frame in databricks. My databricks Runtime version is 7.3 LTS (Scala 2.12, Spark 3.0.1)
  So I wrote following code</p>
  <pre><code>df_temp=spark_temp.toPandas()
  </code></pre>
  <p>But I'm getting error message</p>
  <pre><code>UserWarning: toPandas attempted Arrow optimization because 'spark.sql.execution.arrow.enabled' is set to true,
  </code></pre>
  <p>So I tried following to disable the pyarrow</p>
  <pre><code>spark.conf.set(“spark.sql.execution.arrow.enabled”, “false”)
  </code></pre>
  <p>But I'm getting error message</p>
  <pre><code>SyntaxError: invalid character in identifier
  </code></pre>
  <p>And it's pointing to spark.sql
  Can you help me to resolve the issue</p>