1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/*
* 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 org.apache.spark.sql._
import org.apache.spark.sql.catalyst.analysis.{Analyzer, FunctionRegistry}
import org.apache.spark.sql.catalyst.parser.ParserInterface
import org.apache.spark.sql.execution.{python, SparkPlanner}
import org.apache.spark.sql.execution.datasources._
import org.apache.spark.sql.hive.execution.HiveSqlParser
import org.apache.spark.sql.internal.{SessionState, SQLConf}
/**
* A class that holds all session-specific state in a given [[HiveContext]].
*/
private[hive] class HiveSessionState(ctx: HiveContext) extends SessionState(ctx) {
override lazy val conf: SQLConf = new SQLConf {
override def caseSensitiveAnalysis: Boolean = getConf(SQLConf.CASE_SENSITIVE, false)
}
/**
* Internal catalog for managing table and database states.
*/
override lazy val catalog = {
new HiveSessionCatalog(
ctx.hiveCatalog,
ctx.metadataHive,
ctx,
ctx.functionResourceLoader,
functionRegistry,
conf)
}
/**
* An analyzer that uses the Hive metastore.
*/
override lazy val analyzer: Analyzer = {
new Analyzer(catalog, conf) {
override val extendedResolutionRules =
catalog.ParquetConversions ::
catalog.OrcConversions ::
catalog.CreateTables ::
catalog.PreInsertionCasts ::
PreInsertCastAndRename ::
DataSourceAnalysis ::
(if (conf.runSQLOnFile) new ResolveDataSource(ctx) :: Nil else Nil)
override val extendedCheckRules = Seq(PreWriteCheck(conf, catalog))
}
}
/**
* Parser for HiveQl query texts.
*/
override lazy val sqlParser: ParserInterface = HiveSqlParser
/**
* Planner that takes into account Hive-specific strategies.
*/
override def planner: SparkPlanner = {
new SparkPlanner(ctx.sparkContext, conf, experimentalMethods.extraStrategies)
with HiveStrategies {
override val hiveContext = ctx
override def strategies: Seq[Strategy] = {
experimentalMethods.extraStrategies ++ Seq(
FileSourceStrategy,
DataSourceStrategy,
HiveCommandStrategy(ctx),
HiveDDLStrategy,
DDLStrategy,
SpecialLimits,
InMemoryScans,
HiveTableScans,
DataSinks,
Scripts,
Aggregation,
ExistenceJoin,
EquiJoinSelection,
BasicOperators,
BroadcastNestedLoop,
CartesianProduct,
DefaultJoin
)
}
}
}
}
|
