Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/2241#discussion_r18429781
--- Diff:
sql/hive/v0.13.1/src/main/scala/org/apache/spark/sql/hive/Shim.scala ---
@@ -0,0 +1,158 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.sql.hive
+
+import java.util.Properties
+import org.apache.hadoop.conf.Configuration
+import org.apache.hadoop.fs.Path
+import org.apache.hadoop.hive.common.StatsSetupConst
+import org.apache.hadoop.hive.common.`type`.{HiveDecimal}
+import org.apache.hadoop.hive.conf.HiveConf
+import org.apache.hadoop.hive.ql.Context
+import org.apache.hadoop.hive.ql.metadata.{Table, Hive, Partition}
+import org.apache.hadoop.hive.ql.plan.{FileSinkDesc, TableDesc}
+import org.apache.hadoop.hive.ql.processors.CommandProcessorFactory
+import org.apache.hadoop.hive.serde2.{ColumnProjectionUtils, Deserializer}
+import org.apache.hadoop.mapred.InputFormat
+import org.apache.spark.Logging
+import org.apache.hadoop.{io => hadoopIo}
+import scala.collection.JavaConversions._
+import scala.language.implicitConversions
+
+/**
+ * A compatibility layer for interacting with Hive version 0.13.1.
+ */
+private[hive] object HiveShim {
+ val version = "0.13.1"
+ /*
+ * TODO: hive-0.13 support DECIMAL(precision, scale), DECIMAL in
hive-0.12 is actually DECIMAL(10,0)
+ * Full support of new decimal feature need to be fixed in seperate PR.
+ */
+ val metastoreDecimal = "decimal(10,0)"
+
+ def getTableDesc(
+ serdeClass: Class[_ <: Deserializer],
+ inputFormatClass: Class[_ <: InputFormat[_, _]],
+ outputFormatClass: Class[_],
+ properties: Properties) = {
+ new TableDesc(inputFormatClass, outputFormatClass, properties)
+ }
+
+ def getStatsSetupConstTotalSize = StatsSetupConst.TOTAL_SIZE
+
+ def createDefaultDBIfNeeded(context: HiveContext) ={
+ context.runSqlHive("CREATE DATABASE default")
+ context.runSqlHive("USE default")
+ }
+
+ /** The string used to denote an empty comments field in the schema. */
+ def getEmptyCommentsFieldValue = ""
+
+ def getCommandProcessor(cmd: Array[String], conf: HiveConf) = {
+ CommandProcessorFactory.get(cmd, conf)
+ }
+
+ def createDecimal(bd: java.math.BigDecimal): HiveDecimal = {
+ HiveDecimal.create(bd)
+ }
+
+ /*
+ * This function in hive-0.13 become private, but we have to do this to
walkaround hive bug
+ */
+ private def appendReadColumnNames(conf: Configuration, cols:
Seq[String]) {
+ val old: String =
conf.get(ColumnProjectionUtils.READ_COLUMN_NAMES_CONF_STR, "")
+ val result: StringBuilder = new StringBuilder(old)
+ var first: Boolean = old.isEmpty
+
+ for (col <- cols) {
+ if (first) {
+ first = false
+ }
+ else {
--- End diff --
```
if () {
...
} else {
...
}
```
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