Yin Huai created SPARK-10287:
--------------------------------
Summary: After processing a query using JSON data, Spark SQL
continuously refreshes metadata of the table
Key: SPARK-10287
URL: https://issues.apache.org/jira/browse/SPARK-10287
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 1.5.0
Reporter: Yin Huai
Priority: Blocker
{code}
val df = sqlContext.read.format("json").load("aPartitionedJsonData")
val columnStr = df.schema.map(_.name).mkString(",")
println(s"columns: $columnStr")
val hash = df
.selectExpr(s"hash($columnStr) as hashValue")
.groupBy()
.sum("hashValue")
.head()
.getLong(0)
{code}
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