The prepare/close step of scalar function is already supported in execution framework, We only need to do is that support it in syntax and meta in frontend.
In addition, 'Hive' binary type of scalar function NOT supports prepare/close step, we need to make it supports.
Random distribution is no longer supported since version 0.9.
And we need a way to convert the random distribution to hash distribution.
ALTER TABLE db.tbl SET ("distribution_type" = "hash");
1. Support specifying label to Insert Into stmt.
INSERT INTO tbl1 WITH LABEL label1 ...;
2. Return job' state corresponding to the existing label in result of stream load.
...
"Status": "Label Already Exists",
"ExistingJobStatus": "FINISHED"
...
3. Return the recent 2000 transactions in SHOW PROC '/transactions'
Currently, we do not support parsing encoded/compressed columns in file path, eg: extract column k1 from file path /path/to/dir/k1=1/xxx.csv
This patch is able to parse columns from file path like in Spark(Partition Discovery).
This patch parse partition columns at BrokerScanNode.java and save parsing result of each file path as a property of TBrokerRangeDesc, then the broker reader of BE can read the value of specified partition column.
* Broker load supports function
The commit support the column function in broker load.
The grammar of LoadStmt has not been changed.
Example:
columns terminated by ',' (tmp_c1, tmp_c2) set (c1=tmp_c1+tmp_c2)
Also, the old function is compatible such as default_value, strftime etc.
After this commit, there are no difference in column function between stream load and broker load except old function.
The catalogue of load docs:
---- load-manual.md
---- broker-load-manual.md
---- insert-into-manual.md
---- stream-load-manual.md
This commit also changes max/min_stream_load_timeout to max/min_load_timeout.
The old config named stream_load_timeout means the max timeout suited for all types of load.
So the config name has been changed.
The non-streaming hint of insert into will use the streamin plan which is same as the plan of stream insert.
It will also record the load info and return the label of insert stmt.
The partition is supportted in insert into stmt. The result which meet the target partitions will be loaded.
The introduction of example has been changed especially non-streaming insert.
Also, the param of partition_names is added in sql syntax which is used to declare the target partition_names in target table.
Change META_VERSION to 50
