====
---- QUERY
# This test relies on a deterministic row order so we use "sort by (id)".
create table alltypes sort by (id) like functional_parquet.alltypes;
alter table alltypes set tblproperties("impala.enable.stats.extrapolation"="true");
insert into alltypes partition(year, month)
select * from functional_parquet.alltypes where year = 2009;
====
---- QUERY
explain select id from alltypes;
---- RESULTS: VERIFY_IS_SUBSET
'   stored statistics:'
'     table: rows=unavailable size=unavailable'
'     partitions: 0/12 rows=unavailable'
'     columns: unavailable'
row_regex:.* extrapolated-rows=unavailable.*
'   tuple-ids=0 row-size=4B cardinality=5.97K'
---- TYPES
STRING
====
---- QUERY
# Disable the estimation of cardinality for an hdfs table withot stats.
SET DISABLE_HDFS_NUM_ROWS_ESTIMATE=1;
explain select id from alltypes;
---- RESULTS: VERIFY_IS_SUBSET
'   stored statistics:'
'     table: rows=unavailable size=unavailable'
'     partitions: 0/12 rows=unavailable'
'     columns: unavailable'
row_regex:.* extrapolated-rows=unavailable.*
'   tuple-ids=0 row-size=4B cardinality=unavailable'
---- TYPES
STRING
====
---- QUERY
compute stats alltypes
---- RESULTS
'Updated 1 partition(s) and 11 column(s).'
---- TYPES
STRING
====
---- QUERY
# Only the table-level row count is stored. The partition row counts are extrapolated.
show table stats alltypes
---- LABELS
YEAR, MONTH, #ROWS, EXTRAP #ROWS, #FILES, SIZE, BYTES CACHED, CACHE REPLICATION, FORMAT, INCREMENTAL STATS, LOCATION
---- RESULTS
'2009','1',-1,307,1,regex:.*B,'NOT CACHED','NOT CACHED','PARQUET','false','$NAMENODE/test-warehouse/$DATABASE.db/alltypes/year=2009/month=1'
'2009','10',-1,307,1,regex:.*B,'NOT CACHED','NOT CACHED','PARQUET','false','$NAMENODE/test-warehouse/$DATABASE.db/alltypes/year=2009/month=10'
'2009','11',-1,302,1,regex:.*B,'NOT CACHED','NOT CACHED','PARQUET','false','$NAMENODE/test-warehouse/$DATABASE.db/alltypes/year=2009/month=11'
'2009','12',-1,307,1,regex:.*B,'NOT CACHED','NOT CACHED','PARQUET','false','$NAMENODE/test-warehouse/$DATABASE.db/alltypes/year=2009/month=12'
'2009','2',-1,290,1,regex:.*B,'NOT CACHED','NOT CACHED','PARQUET','false','$NAMENODE/test-warehouse/$DATABASE.db/alltypes/year=2009/month=2'
'2009','3',-1,307,1,regex:.*B,'NOT CACHED','NOT CACHED','PARQUET','false','$NAMENODE/test-warehouse/$DATABASE.db/alltypes/year=2009/month=3'
'2009','4',-1,302,1,regex:.*B,'NOT CACHED','NOT CACHED','PARQUET','false','$NAMENODE/test-warehouse/$DATABASE.db/alltypes/year=2009/month=4'
'2009','5',-1,307,1,regex:.*B,'NOT CACHED','NOT CACHED','PARQUET','false','$NAMENODE/test-warehouse/$DATABASE.db/alltypes/year=2009/month=5'
'2009','6',-1,302,1,regex:.*B,'NOT CACHED','NOT CACHED','PARQUET','false','$NAMENODE/test-warehouse/$DATABASE.db/alltypes/year=2009/month=6'
'2009','7',-1,307,1,regex:.*B,'NOT CACHED','NOT CACHED','PARQUET','false','$NAMENODE/test-warehouse/$DATABASE.db/alltypes/year=2009/month=7'
'2009','8',-1,307,1,regex:.*B,'NOT CACHED','NOT CACHED','PARQUET','false','$NAMENODE/test-warehouse/$DATABASE.db/alltypes/year=2009/month=8'
'2009','9',-1,302,1,regex:.*B,'NOT CACHED','NOT CACHED','PARQUET','false','$NAMENODE/test-warehouse/$DATABASE.db/alltypes/year=2009/month=9'
'Total','',3650,3650,12,regex:.*B,'0B','','','',''
---- TYPES
STRING,STRING,BIGINT,BIGINT,BIGINT,STRING,STRING,STRING,STRING,STRING,STRING
====
---- QUERY
# Stats are available now.
explain select id from alltypes;
---- RESULTS: VERIFY_IS_EQUAL
row_regex:.*Max Per-Host Resource Reservation: Memory=.*
row_regex:.*Per-Host Resource Estimates: Memory=.*
'Codegen disabled by planner'
row_regex:.*Analyzed query: SELECT id FROM test_stats_extrapolation_.*.alltypes.*
''
'F00:PLAN FRAGMENT [UNPARTITIONED] hosts=1 instances=1'
row_regex:.*Per-Host Resources: mem-estimate=.* mem-reservation=.*
'PLAN-ROOT SINK'
'|  output exprs: id'
row_regex:.*mem-estimate=.* mem-reservation=.*
'|'
'00:SCAN $FILESYSTEM_NAME [$DATABASE.alltypes]'
row_regex:.*partitions=12/12 files=12 size=.*
'   stored statistics:'
row_regex:.*table: rows=3.65K size=.*
'     partitions: 0/12 rows=unavailable'
'     columns: all'
row_regex:.* extrapolated-rows=3.65K .*
row_regex:.*mem-estimate=.* mem-reservation=.*
'   tuple-ids=0 row-size=4B cardinality=3.65K'
'   in pipelines: 00(GETNEXT)'
---- TYPES
STRING
====
---- QUERY
# Select a subset of partitions.
explain select id from alltypes where month in (1, 2, 3);
---- RESULTS: VERIFY_IS_EQUAL
row_regex:.*Max Per-Host Resource Reservation: Memory=.*
row_regex:.*Per-Host Resource Estimates: Memory=.*
'Codegen disabled by planner'
row_regex:.*Analyzed query: SELECT id FROM test_stats_extrapolation_.*.alltypes WHERE.*
'`month` IN (CAST(1 AS INT), CAST(2 AS INT), CAST(3 AS INT))'
''
'F00:PLAN FRAGMENT [UNPARTITIONED] hosts=1 instances=1'
row_regex:.*mem-estimate=.* mem-reservation=.*
'PLAN-ROOT SINK'
'|  output exprs: id'
row_regex:.*mem-estimate=.* mem-reservation=.*
'|'
'00:SCAN $FILESYSTEM_NAME [$DATABASE.alltypes]'
'   partition predicates: `month` IN (CAST(1 AS INT), CAST(2 AS INT), CAST(3 AS INT))'
row_regex:.*partitions=3/12 files=3 size=.*
'   stored statistics:'
row_regex:.*table: rows=3.65K size=.*
'     partitions: 0/3 rows=unavailable'
'     columns: all'
row_regex:.* extrapolated-rows=904.*
row_regex:.*mem-estimate=.* mem-reservation=.*
'   tuple-ids=0 row-size=4B cardinality=904'
'   in pipelines: 00(GETNEXT)'
---- TYPES
STRING
====
---- QUERY
# Double the data in existing partitions.
insert into alltypes partition(year, month)
select * from functional_parquet.alltypes where year = 2009;
explain select id from alltypes;
---- RESULTS: VERIFY_IS_EQUAL
row_regex:.*Max Per-Host Resource Reservation: Memory=.*
row_regex:.*Per-Host Resource Estimates: Memory=.*
row_regex:.*Analyzed query: SELECT id FROM test_stats_extrapolation_.*.alltypes.*
''
'F00:PLAN FRAGMENT [UNPARTITIONED] hosts=1 instances=1'
row_regex:.*Per-Host Resources: mem-estimate=.* mem-reservation=.*
'PLAN-ROOT SINK'
'|  output exprs: id'
row_regex:.*mem-estimate=.* mem-reservation=.*
'|'
'00:SCAN $FILESYSTEM_NAME [$DATABASE.alltypes]'
row_regex:.*partitions=12/12 files=24 size=.*
'   stored statistics:'
row_regex:.*table: rows=3.65K size=.*
'     partitions: 0/12 rows=unavailable'
'     columns: all'
row_regex:.* extrapolated-rows=7.30K .*
row_regex:.*mem-estimate=.* mem-reservation=.*
'   tuple-ids=0 row-size=4B cardinality=7.30K'
'   in pipelines: 00(GETNEXT)'
---- TYPES
STRING
====
---- QUERY
# Create new partitions and extrapolate their row count.
insert into alltypes partition(year, month)
select * from functional_parquet.alltypes where year = 2010;
explain select id from alltypes where year = 2010;
---- RESULTS: VERIFY_IS_EQUAL
row_regex:.*Max Per-Host Resource Reservation: Memory=.*
row_regex:.*Per-Host Resource Estimates: Memory=16MB.*
'Codegen disabled by planner'
row_regex:.*Analyzed query: SELECT id FROM test_stats_extrapolation_.*.alltypes WHERE.*
'`year` = CAST(2010 AS INT)'
''
'F00:PLAN FRAGMENT [UNPARTITIONED] hosts=1 instances=1'
row_regex:.*Per-Host Resources: mem-estimate=.* mem-reservation=.*
'PLAN-ROOT SINK'
'|  output exprs: id'
row_regex:.*mem-estimate=.* mem-reservation=.*
'|'
'00:SCAN $FILESYSTEM_NAME [$DATABASE.alltypes]'
'   partition predicates: `year` = CAST(2010 AS INT)'
row_regex:.*partitions=12/24 files=12 size=.*
'   stored statistics:'
row_regex:.*table: rows=3.65K size=.*
'     partitions: 0/12 rows=unavailable'
'     columns: all'
row_regex:.* extrapolated-rows=3.65K .*
row_regex:.*mem-estimate=.* mem-reservation=.*
'   tuple-ids=0 row-size=4B cardinality=3.65K'
'   in pipelines: 00(GETNEXT)'
---- TYPES
STRING
====
---- QUERY
# Compute stats and run the same query again.
compute stats alltypes;
explain select id from alltypes where year = 2010;
---- RESULTS: VERIFY_IS_EQUAL
row_regex:.*Max Per-Host Resource Reservation: Memory=.*
row_regex:.*Per-Host Resource Estimates: Memory=16MB.*
'Codegen disabled by planner'
row_regex:.*Analyzed query: SELECT id FROM test_stats_extrapolation_.*.alltypes WHERE.*
'`year` = CAST(2010 AS INT)'
''
'F00:PLAN FRAGMENT [UNPARTITIONED] hosts=1 instances=1'
row_regex:.*Per-Host Resources: mem-estimate=.* mem-reservation=.*
'PLAN-ROOT SINK'
'|  output exprs: id'
row_regex:.*mem-estimate=.* mem-reservation=.*
'|'
'00:SCAN $FILESYSTEM_NAME [$DATABASE.alltypes]'
'   partition predicates: `year` = CAST(2010 AS INT)'
row_regex:.*partitions=12/24 files=12 size=.*
'   stored statistics:'
row_regex:.*table: rows=10.95K size=.*
'     partitions: 0/12 rows=unavailable'
'     columns: all'
row_regex:.* extrapolated-rows=3.65K .*
row_regex:.*mem-estimate=.* mem-reservation=.*
'   tuple-ids=0 row-size=4B cardinality=3.65K'
'   in pipelines: 00(GETNEXT)'
---- TYPES
STRING
====
---- QUERY
# Test that dropping stats resets everything.
drop stats alltypes;
explain select id from alltypes;
---- RESULTS: VERIFY_IS_SUBSET
'   stored statistics:'
'     table: rows=unavailable size=unavailable'
'     partitions: 0/24 rows=unavailable'
'     columns: unavailable'
row_regex:.* extrapolated-rows=unavailable.*
'   tuple-ids=0 row-size=4B cardinality=17.91K'
'   in pipelines: 00(GETNEXT)'
---- TYPES
STRING
====
---- QUERY
# Test that dropping stats resets everything.
SET DISABLE_HDFS_NUM_ROWS_ESTIMATE=1;
drop stats alltypes;
explain select id from alltypes;
---- RESULTS: VERIFY_IS_SUBSET
'   stored statistics:'
'     table: rows=unavailable size=unavailable'
'     partitions: 0/24 rows=unavailable'
'     columns: unavailable'
row_regex:.* extrapolated-rows=unavailable.*
'   tuple-ids=0 row-size=4B cardinality=unavailable'
'   in pipelines: 00(GETNEXT)'
---- TYPES
STRING
====