[jira] [Created] (SPARK-18856) Newly created catalog table assumed to have 0 rows and 0 bytes

["Reynold Xin (JIRA)" <ji...@apache.org>]

Reynold Xin created SPARK-18856:
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             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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