Reynold Xin created SPARK-18856:
-----------------------------------
Summary: Newly created catalog table assumed to have 0 rows and 0
bytes
Key: SPARK-18856
URL: https://issues.apache.org/jira/browse/SPARK-18856
Project: Spark
Issue Type: Bug
Components: SQL
Reporter: Reynold Xin
Priority: Blocker
{code}
scala> spark.range(100).selectExpr("id % 10 p",
"id").write.partitionBy("p").format("json").saveAsTable("testjson")
scala> spark.table("testjson").queryExecution.optimizedPlan.statistics
res6: org.apache.spark.sql.catalyst.plans.logical.Statistics =
Statistics(sizeInBytes=0, isBroadcastable=false)
{code}
It shouldn't be 0. The issue is that in DataSource.scala, we do:
{code}
val fileCatalog = if
(sparkSession.sqlContext.conf.manageFilesourcePartitions &&
catalogTable.isDefined &&
catalogTable.get.tracksPartitionsInCatalog) {
new CatalogFileIndex(
sparkSession,
catalogTable.get,
catalogTable.get.stats.map(_.sizeInBytes.toLong).getOrElse(0L))
} else {
new InMemoryFileIndex(sparkSession, globbedPaths, options,
Some(partitionSchema))
}
{code}
We shouldn't use 0L as the fallback.
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