How to properly read a folder supposedly contains Parquet files from Spark if the folder is empty
When I try to read a folder which supposedly contains files in Parquet format everything works if there is data, if there is no data I am getting error on the first line and subsequent code doesn't executue
val hdfsData: DataFrame = spark.sqlContext.read.parquet(hdfsPath)
hdfsData.rdd.isEmpty() match ....
....
Error: org.apache.spark.sql.AnalysisException: Unable to infer schema for Parquet. It must be specified manually.;
What's the right way to handle this scenario.
apache-spark parquet
asked Nov 22 '18 at 2:45
skjaginiskjagini
1,30621637
add a comment |
When I try to read a folder which supposedly contains files in Parquet format everything works if there is data, if there is no data I am getting error on the first line and subsequent code doesn't executue
val hdfsData: DataFrame = spark.sqlContext.read.parquet(hdfsPath)
hdfsData.rdd.isEmpty() match ....
....
Error: org.apache.spark.sql.AnalysisException: Unable to infer schema for Parquet. It must be specified manually.;
What's the right way to handle this scenario.
apache-spark parquet
asked Nov 22 '18 at 2:45
skjaginiskjagini
1,30621637
add a comment |
When I try to read a folder which supposedly contains files in Parquet format everything works if there is data, if there is no data I am getting error on the first line and subsequent code doesn't executue
val hdfsData: DataFrame = spark.sqlContext.read.parquet(hdfsPath)
hdfsData.rdd.isEmpty() match ....
....
Error: org.apache.spark.sql.AnalysisException: Unable to infer schema for Parquet. It must be specified manually.;
What's the right way to handle this scenario.
apache-spark parquet
asked Nov 22 '18 at 2:45
skjaginiskjagini
1,30621637
When I try to read a folder which supposedly contains files in Parquet format everything works if there is data, if there is no data I am getting error on the first line and subsequent code doesn't executue
val hdfsData: DataFrame = spark.sqlContext.read.parquet(hdfsPath)
hdfsData.rdd.isEmpty() match ....
....
Error: org.apache.spark.sql.AnalysisException: Unable to infer schema for Parquet. It must be specified manually.;
What's the right way to handle this scenario.
apache-spark parquet
apache-spark parquet
asked Nov 22 '18 at 2:45
skjaginiskjagini
1,30621637
asked Nov 22 '18 at 2:45
skjaginiskjagini
1,30621637
edited Nov 22 '18 at 2:50
skjagini
asked Nov 22 '18 at 2:45
skjaginiskjagini
1,30621637
asked Nov 22 '18 at 2:45
skjaginiskjagini
1,30621637
asked Nov 22 '18 at 2:45
skjaginiskjagini
1,30621637
1,30621637
add a comment |
add a comment |
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