Taras Bobrovytsky f8b406222d IMPALA-6388: Fix the Union node number of hosts estimation ...

Before this patch, we would estimate the number of hosts for the union
node by looking only at the first union operand. This is obviously
incorrect and lead us to underestimate the value.

We fix the problem by setting the estimate to be the maximum of its
children.

Testing:
- Added a planner test that reproduces the issue

Change-Id: I51e1ecca8dbc84b2b5a72708667b2799d00279f0
Reviewed-on: http://gerrit.cloudera.org:8080/9017
Reviewed-by: Tim Armstrong <tarmstrong@cloudera.com>
Tested-by: Impala Public Jenkins

2018-01-17 01:41:16 +00:00

..

AllTypesError

Fix IMP-297

2014-01-08 10:46:44 -08:00

AllTypesErrorNoNulls

Timestamp data type implimentation.

2012-03-22 21:38:18 -07:00

avro_null_char

IMPALA-1136, IMPALA-2161: Skip \u0000 characters when dealing Avro schemas

2015-09-02 00:37:28 +00:00

avro_schema_resolution

IMPALA-4615: Fix create_table.sql command order

2017-03-09 06:00:15 +00:00

bad_avro_snap

IMPALA-4387: validate decimal type in Avro file schema

2016-10-30 00:12:58 +00:00

bad_parquet_data

IMPALA-3745: parquet invalid data handling

2016-06-15 21:33:39 -07:00

bad_seq_snap

Add HdfsLzoTextScanner

2014-01-08 10:46:35 -08:00

bad_text_gzip

Add support for streaming decompression of gzip text

2014-11-23 01:55:55 -08:00

bad_text_lzo

Add HdfsLzoTextScanner

2014-01-08 10:46:35 -08:00

bin

IMPALA-3887: Wait for HDFS replication in data loading

2018-01-09 03:24:36 +00:00

cluster

IMPALA-6384: RequestPoolService should honor custom group mapping config

2018-01-11 22:52:29 +00:00

common

IMPALA-6068: Scale back fixing functional-types

2017-12-04 23:46:44 +00:00

ComplexTypesTbl

IMPALA-4675: Case-insensitive matching of Parquet fields.

2017-03-03 10:20:07 +00:00

compressed_formats

IMPALA-1619: Support 64-bit allocations.

2016-07-08 15:42:09 -07:00

data

IMPALA-5052: Read and write signed integer logical types in Parquet

2018-01-09 04:55:59 +00:00

datasets

IMPALA-6068: Scale back fixing functional-types

2017-12-04 23:46:44 +00:00

DimTbl

adding outer joins plus new tests

2011-09-28 09:02:07 -07:00

hive_benchmark

Perf Work:

2011-12-30 00:26:27 -08:00

ImpalaDemoDataset

Test data loading framework improvements

2014-01-08 10:46:49 -08:00

JoinTbl

adding outer joins plus new tests

2011-09-28 09:02:07 -07:00

LikeTbl

Fix null string parsing.

2014-01-08 10:44:40 -08:00

LineItemMultiBlock

IMPALA-2466: Add more tests for the HDFS parquet scanner.

2016-03-25 13:10:15 +00:00

llvm

IMPALA-3918: Remove Cloudera copyrights and add ASF license header

2016-08-09 08:19:41 +00:00

max_nesting_depth

Nested Types: Enforce and test maximum nesting depth of 100.

2015-10-05 11:30:54 -07:00

multi_compression_parquet_data

IMPALA-5448: fix invalid number of splits reported in Parquet scan node

2017-10-10 01:30:33 +00:00

NullTable

IMPALA-13: Use SSE string functions that take an explicit length

2014-04-11 11:16:24 -07:00

parquet_nested_types_encodings

IMPALA-4725: Query option to control Parquet array resolution.

2017-03-09 05:07:44 +00:00

parquet_schema_resolution

IMPALA-3786: Replace "cloudera" with "apache" (part 2)

2016-09-29 21:14:13 +00:00

src/main/java/org/apache/impala/datagenerator

IMPALA-4433: Always generate testdata using the same time zone setting

2016-11-15 04:18:33 +00:00

TableFlattener

Remove unused deps, centralize some pom versions, upgrade SLF4J and commons-io.

2017-12-20 22:04:18 +00:00

TblWithRaggedColumns

IMP-380 handle '\r' at end of row.

2014-01-08 10:46:14 -08:00

TinyIntTable

IMP-232: Parallel INSERT OVERWRITE

2014-01-08 10:45:04 -08:00

TinyTable

When a scan range begins at the starting point fo the tuple, we'll missed that tuple. This patch fixes

2014-01-08 10:44:24 -08:00

tinytable_seq_snap

IMPALA-362: impalad hangs when read sequence file without contents

2014-01-08 10:50:49 -08:00

udfs

IMPALA-4171: Remove JAR from repo.

2016-09-22 02:00:50 +00:00

UnsupportedTypes

IMPALA-3812: Fix error message for unsupported types

2016-11-17 05:31:34 +00:00

workloads

IMPALA-6388: Fix the Union node number of hosts estimation

2018-01-17 01:41:16 +00:00

__init__.py

CDH-18416: Don't inline ReadWriteUtil::ReadZLong()

2014-04-28 15:58:15 -07:00

.gitignore

Updates several .gitignore files.

2017-08-31 01:40:47 +00:00

pom.xml

Remove unused deps, centralize some pom versions, upgrade SLF4J and commons-io.

2017-12-20 22:04:18 +00:00