public void testStringMerge()
{
TypeDescription schema = TypeDescription.createString();
ColumnStatisticsImpl stats1 = ColumnStatisticsImpl.create(schema);
ColumnStatisticsImpl stats2 = ColumnStatisticsImpl.create(schema);
stats1.updateString("bob");
stats1.updateString("david");
stats1.updateString("charles");
stats2.updateString("anne");
byte[] erin = new byte[] { 0, 1, 2, 3, 4, 5, 101, 114, 105, 110 };
stats2.updateString(erin, 6, 4, 5);
Assert.Equal(24, ((StringColumnStatistics)stats2).getSum());
stats1.merge(stats2);
StringColumnStatistics typed = (StringColumnStatistics)stats1;
Assert.Equal("anne", typed.getMinimum());
Assert.Equal("erin", typed.getMaximum());
Assert.Equal(39, typed.getSum());
stats1.reset();
stats1.updateString("aaa");
stats1.updateString("zzz");
stats1.merge(stats2);
Assert.Equal("aaa", typed.getMinimum());
Assert.Equal("zzz", typed.getMaximum());
}
public void testLongMerge()
{
TypeDescription schema = TypeDescription.createInt();
ColumnStatisticsImpl stats1 = ColumnStatisticsImpl.create(schema);
ColumnStatisticsImpl stats2 = ColumnStatisticsImpl.create(schema);
stats1.updateInteger(10, 2);
stats2.updateInteger(1, 1);
stats2.updateInteger(1000, 1);
stats1.merge(stats2);
IntegerColumnStatistics typed = (IntegerColumnStatistics)stats1;
Assert.Equal(1, typed.getMinimum());
Assert.Equal(1000, typed.getMaximum());
stats1.reset();
stats1.updateInteger(-10, 1);
stats1.updateInteger(10000, 1);
stats1.merge(stats2);
Assert.Equal(-10, typed.getMinimum());
Assert.Equal(10000, typed.getMaximum());
}
public void testDoubleMerge()
{
TypeDescription schema = TypeDescription.createDouble();
ColumnStatisticsImpl stats1 = ColumnStatisticsImpl.create(schema);
ColumnStatisticsImpl stats2 = ColumnStatisticsImpl.create(schema);
stats1.updateDouble(10.0);
stats1.updateDouble(100.0);
stats2.updateDouble(1.0);
stats2.updateDouble(1000.0);
stats1.merge(stats2);
DoubleColumnStatistics typed = (DoubleColumnStatistics)stats1;
Assert.Equal(1.0, typed.getMinimum(), 3);
Assert.Equal(1000.0, typed.getMaximum(), 3);
stats1.reset();
stats1.updateDouble(-10);
stats1.updateDouble(10000);
stats1.merge(stats2);
Assert.Equal(-10, typed.getMinimum(), 3);
Assert.Equal(10000, typed.getMaximum(), 3);
}
public void testTimestampMerge()
{
TypeDescription schema = TypeDescription.createTimestamp();
ColumnStatisticsImpl stats1 = ColumnStatisticsImpl.create(schema);
ColumnStatisticsImpl stats2 = ColumnStatisticsImpl.create(schema);
stats1.updateTimestamp(10);
stats1.updateTimestamp(100);
stats2.updateTimestamp(1);
stats2.updateTimestamp(1000);
stats1.merge(stats2);
TimestampColumnStatistics typed = (TimestampColumnStatistics)stats1;
Assert.Equal(new Timestamp(1), typed.getMinimum());
Assert.Equal(new Timestamp(1000), typed.getMaximum());
stats1.reset();
stats1.updateTimestamp(new Timestamp(-10));
stats1.updateTimestamp(new Timestamp(10000));
stats1.merge(stats2);
Assert.Equal(new Timestamp(-10), typed.getMinimum());
Assert.Equal(new Timestamp(10000), typed.getMaximum());
}
public void testDateMerge()
{
TypeDescription schema = TypeDescription.createDate();
ColumnStatisticsImpl stats1 = ColumnStatisticsImpl.create(schema);
ColumnStatisticsImpl stats2 = ColumnStatisticsImpl.create(schema);
stats1.updateDate(1000);
stats1.updateDate(100);
stats2.updateDate(10);
stats2.updateDate(2000);
stats1.merge(stats2);
DateColumnStatistics typed = (DateColumnStatistics)stats1;
Assert.Equal(new Date(10), typed.getMinimum());
Assert.Equal(new Date(2000), typed.getMaximum());
stats1.reset();
stats1.updateDate(-10);
stats1.updateDate(10000);
stats1.merge(stats2);
Assert.Equal(new Date(-10), typed.getMinimum());
Assert.Equal(new Date(10000), typed.getMaximum());
}
public void testDecimalMerge()
{
TypeDescription schema = TypeDescription.createDecimal()
.withPrecision(38).withScale(16);
ColumnStatisticsImpl stats1 = ColumnStatisticsImpl.create(schema);
ColumnStatisticsImpl stats2 = ColumnStatisticsImpl.create(schema);
stats1.updateDecimal(HiveDecimal.create(10));
stats1.updateDecimal(HiveDecimal.create(100));
stats2.updateDecimal(HiveDecimal.create(1));
stats2.updateDecimal(HiveDecimal.create(1000));
stats1.merge(stats2);
DecimalColumnStatistics typed = (DecimalColumnStatistics)stats1;
Assert.Equal(1, typed.getMinimum().longValue());
Assert.Equal(1000, typed.getMaximum().longValue());
stats1.reset();
stats1.updateDecimal(HiveDecimal.create(-10));
stats1.updateDecimal(HiveDecimal.create(10000));
stats1.merge(stats2);
Assert.Equal(-10, typed.getMinimum().longValue());
Assert.Equal(10000, typed.getMaximum().longValue());
}