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    <title>topic Re: dbx - run unit test error (java.lang.NoSuchMethodError) in Data Engineering</title>
    <link>https://community.databricks.com/t5/data-engineering/dbx-run-unit-test-error-java-lang-nosuchmethoderror/m-p/21145#M14368</link>
    <description>&lt;P&gt;this seems code issue only&lt;/P&gt;</description>
    <pubDate>Sun, 18 Dec 2022 07:28:09 GMT</pubDate>
    <dc:creator>Aviral-Bhardwaj</dc:creator>
    <dc:date>2022-12-18T07:28:09Z</dc:date>
    <item>
      <title>dbx - run unit test error (java.lang.NoSuchMethodError)</title>
      <link>https://community.databricks.com/t5/data-engineering/dbx-run-unit-test-error-java-lang-nosuchmethoderror/m-p/21144#M14367</link>
      <description>&lt;P&gt;I am setting up dbx for the fist time on Windows 10. &lt;/P&gt;&lt;P&gt;Strictly following &lt;A href="https://dbx.readthedocs.io/en/latest/guides/python/python_quickstart/" alt="https://dbx.readthedocs.io/en/latest/guides/python/python_quickstart/" target="_blank"&gt;https://dbx.readthedocs.io/en/latest/guides/python/python_quickstart/&lt;/A&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;openjdk is installed &lt;/P&gt;&lt;PRE&gt;&lt;CODE&gt;conda install -c conda-forge openjdk=11.0.15&lt;/CODE&gt;&lt;/PRE&gt;&lt;P&gt;winutils.exe for Hadoop 3 is downloaded, path is set up &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;Local Dependencies: &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;span class="lia-inline-image-display-wrapper" image-alt="image.png"&gt;&lt;img src="https://community.databricks.com/t5/image/serverpage/image-id/1136i53A4CEC51EBE48D5/image-size/large?v=v2&amp;amp;px=999" role="button" title="image.png" alt="image.png" /&gt;&lt;/span&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Spark 3.3.1: &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;span class="lia-inline-image-display-wrapper" image-alt="image"&gt;&lt;img src="https://community.databricks.com/t5/image/serverpage/image-id/1134i1BE966E249CB0E90/image-size/large?v=v2&amp;amp;px=999" role="button" title="image" alt="image" /&gt;&lt;/span&gt;&lt;/P&gt;&lt;PRE&gt;&lt;CODE&gt;dbx version&lt;/CODE&gt;&lt;/PRE&gt;&lt;P&gt;&lt;span class="lia-inline-image-display-wrapper" image-alt="image"&gt;&lt;img src="https://community.databricks.com/t5/image/serverpage/image-id/1140i089E7F4246BE5E77/image-size/large?v=v2&amp;amp;px=999" role="button" title="image" alt="image" /&gt;&lt;/span&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;I am stuck on the final step (unit tests run):&lt;/P&gt;&lt;PRE&gt;&lt;CODE&gt;pytest tests/unit&lt;/CODE&gt;&lt;/PRE&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;   Error: &lt;B&gt;&lt;I&gt; java.lang.NoSuchMethodError: 'void org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter$.checkFieldName(java.lang.String)'&lt;/I&gt;&lt;/B&gt;&lt;/P&gt;&lt;PRE&gt;&lt;CODE&gt;    if is_error(answer)[0]:
            if len(answer) &amp;gt; 1:
                type = answer[1]
                value = OUTPUT_CONVERTER[type](answer[2:], gateway_client)
                if answer[1] == REFERENCE_TYPE:
&amp;gt;                   raise Py4JJavaError(
                        "An error occurred while calling {0}{1}{2}.\n".
                        format(target_id, ".", name), value)
E                   py4j.protocol.Py4JJavaError: An error occurred while calling o59.saveAsTable.
E                   : java.lang.NoSuchMethodError: 'void org.apache.spark.sql.execution.datasources.parquet.ParquetSchemaConverter$.checkFieldName(java.lang.String)'
E                       at org.apache.spark.sql.delta.schema.SchemaUtils$.$anonfun$checkFieldNames$1(SchemaUtils.scala:890)&lt;/CODE&gt;&lt;/PRE&gt;&lt;P&gt;Could you please help me to solve the issue ?&lt;/P&gt;&lt;P&gt;   &lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;&lt;P&gt;&lt;/P&gt;</description>
      <pubDate>Tue, 22 Nov 2022 18:23:20 GMT</pubDate>
      <guid>https://community.databricks.com/t5/data-engineering/dbx-run-unit-test-error-java-lang-nosuchmethoderror/m-p/21144#M14367</guid>
      <dc:creator>aka1</dc:creator>
      <dc:date>2022-11-22T18:23:20Z</dc:date>
    </item>
    <item>
      <title>Re: dbx - run unit test error (java.lang.NoSuchMethodError)</title>
      <link>https://community.databricks.com/t5/data-engineering/dbx-run-unit-test-error-java-lang-nosuchmethoderror/m-p/21145#M14368</link>
      <description>&lt;P&gt;this seems code issue only&lt;/P&gt;</description>
      <pubDate>Sun, 18 Dec 2022 07:28:09 GMT</pubDate>
      <guid>https://community.databricks.com/t5/data-engineering/dbx-run-unit-test-error-java-lang-nosuchmethoderror/m-p/21145#M14368</guid>
      <dc:creator>Aviral-Bhardwaj</dc:creator>
      <dc:date>2022-12-18T07:28:09Z</dc:date>
    </item>
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