Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/14155#discussion_r74184835
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveExternalCatalog.scala ---
@@ -363,3 +503,82 @@ private[spark] class HiveExternalCatalog(client:
HiveClient, hadoopConf: Configu
}
}
+
+object HiveExternalCatalog {
+ val DATASOURCE_PREFIX = "spark.sql.sources."
+ val DATASOURCE_PROVIDER = DATASOURCE_PREFIX + "provider"
+ val DATASOURCE_SCHEMA = DATASOURCE_PREFIX + "schema"
+ val DATASOURCE_SCHEMA_PREFIX = DATASOURCE_SCHEMA + "."
+ val DATASOURCE_SCHEMA_NUMPARTS = DATASOURCE_SCHEMA_PREFIX + "numParts"
+ val DATASOURCE_SCHEMA_NUMPARTCOLS = DATASOURCE_SCHEMA_PREFIX +
"numPartCols"
+ val DATASOURCE_SCHEMA_NUMSORTCOLS = DATASOURCE_SCHEMA_PREFIX +
"numSortCols"
+ val DATASOURCE_SCHEMA_NUMBUCKETS = DATASOURCE_SCHEMA_PREFIX +
"numBuckets"
+ val DATASOURCE_SCHEMA_NUMBUCKETCOLS = DATASOURCE_SCHEMA_PREFIX +
"numBucketCols"
+ val DATASOURCE_SCHEMA_PART_PREFIX = DATASOURCE_SCHEMA_PREFIX + "part."
+ val DATASOURCE_SCHEMA_PARTCOL_PREFIX = DATASOURCE_SCHEMA_PREFIX +
"partCol."
+ val DATASOURCE_SCHEMA_BUCKETCOL_PREFIX = DATASOURCE_SCHEMA_PREFIX +
"bucketCol."
+ val DATASOURCE_SCHEMA_SORTCOL_PREFIX = DATASOURCE_SCHEMA_PREFIX +
"sortCol."
+
+ def getProviderFromTableProperties(metadata: CatalogTable):
Option[String] = {
+ metadata.properties.get(DATASOURCE_PROVIDER)
+ }
+
+ def getOriginalTableProperties(metadata: CatalogTable): Map[String,
String] = {
+ metadata.properties.filterNot { case (key, _) =>
key.startsWith(DATASOURCE_PREFIX) }
--- End diff --
For debug, we can read the table metadata from hive client to see the raw
data.
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