Zoltan Borok-Nagy 03af0b2c8c IMPALA-10422: EXPLAIN statements leak ACID transactions and locks ...

Currently EXPLAIN statements might open ACID transactions and
create locks on ACID tables.

This is not necessary since we won't modify the table. But the
real problem is that these transactions and locks are leaked and
open forever. They are even getting heartbeated while the
coordinator is still running.

The solution is to not consume any ACID resources for EXPLAIN
statements.

Testing:
* Added EXPLAIN INSERT OVERWRITE in front of an actual INSERT OVERWRITE
  in an e2e test

Change-Id: I05113b1fd9a3eb2d0dd6cf723df916457f3fbf39
Reviewed-on: http://gerrit.cloudera.org:8080/16923
Reviewed-by: Csaba Ringhofer <csringhofer@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>

2021-01-05 21:31:05 +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-9068: Use different directories for external vs managed warehouse

2020-01-24 17:29:15 +00:00

bad_avro_snap

IMPALA-8198: DATE: Read from avro.

2019-09-27 17:18:35 +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

bin

IMPALA-10360: Allow simple limit to be treated as sampling hint

2020-12-10 07:15:36 +00:00

cluster

IMPALA-10193: Limit the memory usage for the whole test cluster

2020-10-01 08:38:18 +00:00

common

Convert dataload hdfs copy commands to LOAD DATA statements

2020-02-24 21:22:18 +00:00

ComplexTypesTbl

IMPALA-6503: Support reading complex types from ORC

2019-03-08 04:39:08 +00:00

compressed_formats

IMPALA-1619: Support 64-bit allocations.

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

CustomerMultiBlock

IMPALA-4993: extend dictionary filtering to collections

2018-01-19 20:37:25 +00:00

data

IMPALA-10361: Use field id to resolve columns for Iceberg tables

2020-12-10 19:01:08 +00:00

datasets

IMPALA-10380: INSERT INTO Iceberg tables with 'IDENTITY' partitions only

2020-12-17 08:54:51 +00:00

DimTbl

…

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

…

LikeTbl

Fix null string parsing.

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

LineItemMultiBlock

IMPALA-5717: Support for reading ORC data files

2018-04-11 05:13:02 +00:00

llvm

IMPALA-10196: Remove LlvmCodeGen::CastPtrToLlvmPtr

2020-09-29 20:55:36 +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

NullRows

IMPALA-8095: Detailed expression cardinality tests

2019-02-09 02:56:52 +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

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

tzdb

IMPALA-8043: Fix BE test failures related to SystemV timezones.

2019-01-15 17:04:55 +00:00

tzdb_tiny

IMPALA-5050: Add support to read TIMESTAMP_MILLIS and TIMESTAMP_MICROS from Parquet

2018-11-14 20:16:14 +00:00

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-10422: EXPLAIN statements leak ACID transactions and locks

2021-01-05 21:31:05 +00:00

__init__.py

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

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

.gitignore

Update .gitignore

2018-10-26 22:19:35 +00:00