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https://issues.apache.org/jira/browse/SPARK-9896?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15663738#comment-15663738
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Manish Maheshwari commented on SPARK-9896:
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The issue got fixed automatically. It occured for a directory that was just
created in HDFS (HIVE path). Very Odd
> Parquet Schema Assertion
> ------------------------
>
> Key: SPARK-9896
> URL: https://issues.apache.org/jira/browse/SPARK-9896
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Michael Armbrust
> Priority: Blocker
>
> Need to investigate more, but I'm seeing this all of a sudden.
> {code}
> java.lang.AssertionError: assertion failed: No predefined schema found, and
> no Parquet data files or summary files found under
> s3n:/.../databricks-performance-datasets/tpcds/sf1500-parquet/useDecimal=true/parquet/item
> {code}
> Possibly related to [SPARK-9407].
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