org.apache.hadoop.hive.ql.hooks

Class AccurateEstimatesCheckerHook

java.lang.Object

org.apache.hadoop.hive.ql.parse.AbstractSemanticAnalyzerHook

org.apache.hadoop.hive.ql.hooks.AccurateEstimatesCheckerHook

All Implemented Interfaces:

Hook, HiveSemanticAnalyzerHook

public class AccurateEstimatesCheckerHook
extends AbstractSemanticAnalyzerHook

Adds an extra check for Explain Analyze queries.

Constructor Summary

Constructors

Constructor and Description
AccurateEstimatesCheckerHook()

Method Summary

Modifier and Type	Method and Description
void	postAnalyze(HiveSemanticAnalyzerHookContext context, List<Task<?>> rootTasks) Invoked after Hive performs its own semantic analysis on a statement (including optimization).

Methods inherited from class org.apache.hadoop.hive.ql.parse.AbstractSemanticAnalyzerHook

preAnalyze

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AccurateEstimatesCheckerHook

public AccurateEstimatesCheckerHook()

Method Detail

postAnalyze

public void postAnalyze(HiveSemanticAnalyzerHookContext context,
                        List<Task<?>> rootTasks)
                 throws SemanticException

Description copied from interface: HiveSemanticAnalyzerHook

Invoked after Hive performs its own semantic analysis on a statement (including optimization). Hive calls postAnalyze on the same hook object as preAnalyze, so the hook can maintain state across the calls.

Specified by:

postAnalyze in interface HiveSemanticAnalyzerHook

Overrides:

postAnalyze in class AbstractSemanticAnalyzerHook

Parameters:

context - context information for semantic analysis

rootTasks - root tasks produced by semantic analysis; the hook is free to modify this list or its contents

Throws:

SemanticException