Add a new distributed cost model in Nereids. The new cost model models the cost of the pipeline execute engine by dividing cost into run and start costs. They are:
* START COST: the cost from starting to emitting the fist tuple
* RUN COST: the cost from emitting the first tuple to emitting all tuples
For the parent operator and child operator, we assume the timeline of them is:
```
child start ---> child run --------------------> finish
|---> parent start ---> parent run -> finish
```
Therefore, in the parallel model, we can get:
```
start_cost(parent) = start_cost(child) + start_cost(parent)
run_cost(parent) = max(run_cost(child), start_cost(parent) + run_cost(parent))
```
make it usable in hive.
current issue: type of partition column are wrapped by ``, it's not illegal in hive. One problem case:
CREATE TABLE t3p_parquet(
id int,
name string)
PARTITIONED BY (
dt int)
ROW FORMAT SERDE
'org.apache.hadoop.hive.ql.io.parquet.serde.ParquetHiveSerDe'
STORED AS INPUTFORMAT
'org.apache.hadoop.hive.ql.io.parquet.MapredParquetInputFormat'
OUTPUTFORMAT
'org.apache.hadoop.hive.ql.io.parquet.MapredParquetOutputFormat'
LOCATION
'hdfs://path/to/t3p_parquet'
TBLPROPERTIES (
'transient_lastDdlTime'='1671700883')
update broadcast join cost estimate according to BE implementation.
there is an enhancement on BE. in broadcast join, BE only build one hash table, not instanceNum hash tables.
1. Support for more expression type
2. Support derive with histogram
3. Use StatisticRange to abstract to logic
4. Use Statistics rather than StatisDeriveResult
After adding a unique ID, the unRankTest fail because each plan has a different ID in the string.
To avoid the effect of unique ID, Compare the plan with the output rather than the string
* [Feature](vectorized)(quantile_state): support vectorized quantile state functions
1. now quantile column only support not nullable
2. add up some regression test cases
3. set default enable_quantile_state_type = true
---------
Co-authored-by: spaces-x <weixiang06@meituan.com>
1. introduce a new type `VARIANT` to encapsulate dynamic generated columns for hidding the detail of types and names of newly generated columns
2. introduce a new expression `SchemaChangeExpr` for doing schema change for extensibility
WITH t0 AS(
SELECT report.date1 AS date2 FROM(
SELECT DATE_FORMAT(date, '%Y%m%d') AS date1 FROM cir_1756_t1
) report GROUP BY report.date1
),
t3 AS(
SELECT date_format(date, '%Y%m%d') AS date3
FROM cir_1756_t2
)
SELECT row_number() OVER(ORDER BY date2)
FROM(
SELECT t0.date2 FROM t0 LEFT JOIN t3 ON t0.date2 = t3.date3
) tx;
The DATE_FORMAT(date, '%Y%m%d') was calculated in GROUP BY node, which is wrong. This expr should be calculated inside the subquery.
Some HDP/CDH Hive versions use gzip to compress the message body of hms NotificationEvent,
so com.qihoo.finance.hms.event.MetastoreEventFactory can not transfer it rightly.
1.if be is dead and be ip not changed by FQDNManager，A situation may occur that after a while the old ip is used by other new alive pod，this may cause two be share same ip which is unexpected.
2.when enable_fqdn is false, user can still set hostname in be when add backend
Co-authored-by: caiconghui1 <caiconghui1@jd.com>
This is PR introduce splitter interface external table.
The splitter interface contain one method getSplits, which is used by QueryScanProvider to get the external file split.
For Hive/Iceberg/TVF, a split is a file block. For ES, it is a shard.
This PR also move the getSplits logic in FileScanProviderIf to the new Splitter interface.
In the future, we may unify internal table as well.
for some reasons, transaction pushlish succeed replica num less than quorum,
this transaction's status can not to be VISIBLE, and this publish task of this
replica of this tablet on this backend need retry publish success to
make transaction VISIBLE when last publish failed.
Signed-off-by: nextdreamblue <zxw520blue1@163.com>
