Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/1741#discussion_r15736318
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveContext.scala ---
@@ -93,6 +97,83 @@ class HiveContext(sc: SparkContext) extends
SQLContext(sc) {
catalog.createTable("default", tableName,
ScalaReflection.attributesFor[A], allowExisting)
}
+ /**
+ * Analyzes the given table in the current database to generate
statistics, which will be
+ * used in query optimizations.
+ *
+ * Right now, it only supports Hive tables and it only updates the size
of a Hive table
+ * in the Hive metastore.
+ */
+ def analyze(tableName: String) {
+ val relation = catalog.lookupRelation(None, tableName) match {
+ case LowerCaseSchema(r) => r
+ case o => o
+ }
+
+ relation match {
+ case relation: MetastoreRelation => {
+ // This method is borrowed from
+ //
org.apache.hadoop.hive.ql.stats.StatsUtils.getFileSizeForTable(HiveConf, Table)
+ // in Hive 0.13.
+ // TODO: Generalize statistics collection.
+ // TODO: Can we use fs.getContentSummary?
+ // Seems fs.getContentSummary returns wrong table size on Jenkins.
So we use
+ // countFileSize to count the table size.
+ def countFileSize(fs: FileSystem, path: Path): Long = {
--- End diff --
It should be `calculateTableSize`.
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