org.apache.drill.exec.store.hive

Class HiveMetadataProvider.HiveStats

java.lang.Object

org.apache.drill.exec.store.hive.HiveMetadataProvider.HiveStats

Enclosing class:

HiveMetadataProvider

public static class HiveMetadataProvider.HiveStats
extends Object

Contains stats. Currently only numRows and totalSizeInBytes are used.

Constructor Summary

Constructors

Constructor and Description
HiveStats(long numRows, long sizeInBytes)

Method Summary

Modifier and Type	Method and Description
void	add(HiveMetadataProvider.HiveStats s)
long	getNumRows()
long	getSizeInBytes()
static HiveMetadataProvider.HiveStats	getStatsFromProps(Properties properties) Get the stats from table properties.
String	toString()
boolean	valid() Both numRows and sizeInBytes are expected to be greater than 0 for stats to be valid

Methods inherited from class java.lang.Object

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

Constructor Detail

HiveStats

public HiveStats(long numRows,
                 long sizeInBytes)

Method Detail

getStatsFromProps

public static HiveMetadataProvider.HiveStats getStatsFromProps(Properties properties)

Get the stats from table properties. If not found -1 is returned for each stats field. CAUTION: stats may not be up-to-date with the underlying data. It is always good to run the ANALYZE command on Hive table to have up-to-date stats.

Parameters:

properties - the source of table stats

Returns:

HiveMetadataProvider.HiveStats instance with rows number and size in bytes from specified properties

getNumRows

public long getNumRows()

getSizeInBytes

public long getSizeInBytes()

valid

public boolean valid()

Both numRows and sizeInBytes are expected to be greater than 0 for stats to be valid

add

public void add(HiveMetadataProvider.HiveStats s)

toString

public String toString()

Overrides:

toString in class Object