This CL implements a simulated FE process and a simulated BE service.
You can view their specific usage methods at
`fe/src/test/java/org/apache/doris/utframe/DemoTest.java`
At the same time, I modified the configuration of the maven-surefire-plugin plugin,
so that each unit test runs in a separate JVM, which can avoid conflicts caused by
various singleton classes in FE.
Starting a separate jvm for each unit test will bring about 30% extra time overhead.
However, you can control the number of concurrency of unit tests by setting the `forkCount`
configuration of the maven-surefire-plugin plugin in `fe/pom.xml`. The default configuration
is still 1 for easy viewing of the output log. If set to 3, the entire FE unit test run time is about
4 minutes.
**Describe the bug**
**First**, In the broker load, we allow users to add multiple data descriptions. Each data description
represents a description of a file (or set of files). Including file path, delimiter, table and
partitions to be loaded, and other information.
When the user specifies multiple data descriptions, Doris currently aggregates the data
descriptions belonging to the same table and generates a unified load task.
The problem here is that although different data descriptions point to the same table,
they may specify different partitions. Therefore, the aggregation of data description
should not only consider the table level, but also the partition level.
Examples are as follows:
data description 1 is:
```
DATA INFILE("hdfs://hdfs_host:hdfs_port/input/file1")
INTO TABLE `tbl1`
PARTITION (p1, p2)
```
data description 2 is:
```
DATA INFILE("hdfs://hdfs_host:hdfs_port/input/file2")
INTO TABLE `tbl1`
PARTITION (p3, p4)
```
What user expects is to load file1 into partition p1 and p2 of tbl1, and load file2 into paritition
p3 and p4 of same table. But currently, it will be aggregated together, which result in loading
file1 and file2 into all partitions p1, p2, p3 and p4.
**Second**, the following 2 data descriptions are not allowed:
```
DATA INFILE("hdfs://hdfs_host:hdfs_port/input/file1")
INTO TABLE `tbl1`
PARTITION (p1, p2)
DATA INFILE("hdfs://hdfs_host:hdfs_port/input/file2")
INTO TABLE `tbl1`
PARTITION (p2, p3)
```
They have overlapping partition(p2), which is not support yet. And we should throw an Exception
to cancel this load job.
**Third**, there is a problem with the code implementation. In the constructor of
`OlapTableSink.java`, we pass in a string of partition names separated by commas.
But at the `OlapTableSink` level, we should be able to pass in a list of partition ids directly,
instead of names.
ISSUE: #2823
Support replication_num setting for table level, so There is no need for user to set replication_num for every alter table add partition statement.
eg:
`alter table tbl set ("default.replication_num" = "2");`
Support Grouping Sets, Rollup and Cube to extend group by statement
support GROUPING SETS syntax
```
SELECT a, b, SUM( c ) FROM tab1 GROUP BY GROUPING SETS ( (a, b), (a), (b), ( ) );
```
cube or rollup like
```
SELECT a, b,c, SUM( d ) FROM tab1 GROUP BY ROLLUP|CUBE(a,b,c)
```
[ADD] support grouping functions in expr like grouping(a) + grouping(b) (#2039)
[FIX] fix analyzer error in window function(#2039)
This commit replaces the PowerMock/EasyMock in our unit tests, But not all.
PS.(The tests relevant to DescribeStmt are ignored until I find a way to fix it)
This commit contains the following changes:
1. Let create/alter view statement support cte sql. (Issue #2625 )
e.g.
```
Alter view test_tbl_view (h1, h2)
as
with testTbl_cte (w1, w2) as
(
select col1, col2 from testDb.testTbl
)
select w1 as c1, sum(w2) as c2 from testTbl_cte
where w1 > 10
group by w1 order by w1
```
2. Fix the bug that view's schema remains unchanged after replaying alter view. (Issue #2624 )
"Type" is a abstract class, it has 4 sub classes:
1. ScalarType
2. ArrayType
3. MapType
4. StructType
This CL only support ScalarType. Other types can be added later.
In some scenarios, when a user creates an olap table that is range partition by time, the user needs to periodically add and remove partitions to ensure that the data is valid. As a result, adding and removing partitions dynamically can be very useful for users.
This commit adds a new statement named alter view, like
ALTER VIEW view_name
(
col_1,
col_2,
col_3,
)
AS SELECT k1, k2, SUM(v1) FROM exampleDb.testTbl GROUP BY k1,k2
Support time zone variable like "-8:00","+8:00","8:00"
Time zone variable like "-8:00" is illegal in time-zone ID ,so we mush transfer it to standard format
Support to create materialized view
This commit support to create materiliazed view.
The syntax of stmt is following:
CREATE Materialized View [MV name] AS
SELECT select_expr[, select_expr ...]
FROM [Base table name]
GROUP BY column_name[, column_name ...]
ORDER BY column_name[, column_name ...]
The CreateMaterializedViewClause is used to check the semantic of stmt in the first step.
Now, the where, having, limit clause is forbidden in CREATE MATERIALIZED VIEW.
Also the aggregation function is restricted in SUM/MIN/MAX.
The second step is to validate stmt according to metadata of base table.
For example, the aggregate type of mv column must be same as the aggregate type of base column in aggregate table.
The last step is to prepare index of mv and add this new mvJob in Handler.
The handler will asynchronous process this new mvJob.
[Tag System]
This CL includes 2 parts:
Add classes related to "tag"
Resource: is the collective name of the nodes that provide various service capabilities in Doris cluster.
Tag: A Tag consists of type and name.
TagSet: TagSet represents a set of tags.
TagManager: maintains 2 indexes:
one is from tag to resource.
one is from resource to tags
ISSUE #1723
Using JSON as serialization methods of metadata
Introduce GSON library to serialize the new classes mentioned above.
ISSUE #2415#2389
GSON's version is updated to 2.8.6
The multi cluster feature will be deprecated soon.
Add a FE config "disable_cluster_feature", and default is true, to
forbid any cluster related operations, include:
* create/drop cluster
* add free backend/add backend to cluster/decommission cluster balance
* change the backends num of cluster
* link/migration db
* fix ut
This commit fixs the bug below,
FE throws a unexpected exception when encounter a query like :
Set sql_mode = '0,PIPES_AS_CONCAT'.
and make some change to sql mode analyze process, now the analyze process is no longer put in SetVar.class, but in VariableMgr.class.
[Metric] Add tablet compaction score metrics
Backend:
Add metric "tablet_max_compaction_score" to monitor the current max compaction
score of tablets on this Backend. This metric will be updated each time
the compaction thread picking tablets to compact.
Frontend:
Add metric "tablet_max_compaction_score" for each Backend. These metrics will
be updated when backends report tablet.
And also add a calculated metric "max_tablet_compaction_core" to monitor the
max compaction core of tablets on all Backends.
'isRestore' flag is for the old version of backup and restore process,
which is deprecated long time ago. Remove it.
This commit is also for making a further step to ISSUE #1723.
[Load]
When performing a long-time load job, the following errors may occur. Causes the load to fail.
load channel manager add batch with unknown load id: xxx
There is a case of this error because Doris opened an unrelated channel during the load
process. This channel will not receive any data during the entire load process. Therefore,
after a fixed timeout, the channel will be released.
And after the entire load job is completed, it will try to close all open channels. When it try to
close this channel, it will find that the channel no longer exists and an error is reported.
This CL will pass the timeout of load job to the load channel, so that the timeout of load channels
will be same as load job's.
All classes that implement the Wriable interface need only implement the write() method.
The read() method should be implemented by itself according to the situation of different
classes.
**Authorization checking logic**
There are some problems with the current password and permission checking logic. For example:
First, we create a user by:
`create user cmy@"%" identified by "12345";`
And then 'cmy' can login with password '12345' from any hosts.
Second, we create another user by:
`create user cmy@"192.168.%" identified by "abcde";`
Because "192.168.%" has a higher priority in the permission table than "%". So when "cmy" try
to login in by password "12345" from host "192.168.1.1", it should match the second permission
entry, and will be rejected because of invalid password.
But in current implementation, Doris will continue to check password on first entry, than let it pass. So we should change it.
**Permission checking logic**
After a user login, it should has a unique identity which is got from permission table. For example,
when "cmy" from host "192.168.1.1" login, it's identity should be `cmy@"192.168.%"`. And Doris
should use this identity to check other permission, not by using the user's real identity, which is
`cmy@"192.168.1.1"`.
**Black list**
Functionally speaking, Doris only support adding WHITE LIST, which is to allow user to login from
those hosts in the white list. But is some cases, we do need a BLACK LIST function.
Fortunately, by changing the logic described above, we can simulate the effect of the BLACK LIST.
For example, First we add a user by:
`create user cmy@'%' identified by '12345';`
And now user 'cmy' can login from any hosts. and if we don't want 'cmy' to login from host A, we
can add a new user by:
`create user cmy@'A' identified by 'other_passwd';`
Because "A" has a higher priority in the permission table than "%". If 'cmy' try to login from A using password '12345', it will be rejected.
fix arithmetic operation between numeric and non-numeric will cause unexpected value.
After this patch you will get
mysql> select 1 + "kks";
+-----------+
| 1 + 'kks' |
+-----------+
| 1 |
+-----------+
1 row in set (0.02 sec)
mysql> select 1 - "kks";
+-----------+
| 1 - 'kks' |
+-----------+
| 1 |
+-----------+
1 row in set (0.01 sec)
This commit add a new plan node named AssertNumRowsNode
which is used to determine whether the number of rows exceeds the limit.
The subquery in Binary predicate and Between-and predicate should be added a AssertNumRowsNode
which is used to determine whether the number of rows in subquery is more than 1.
If the number of rows in subquery is more than 1, the query will be cancelled.
For example:
There are 4 rows in table t1.
Query: select c1 from t1 where c1=(select c2 from t1);
Result: ERROR 1064 (HY000): Expected no more than 1 to be returned by expression select c2 from t1
ISSUE-2270
TPC-DS 6,54,58
For #2383
1. Limit the concurrent transactions of routine load job
2. Create new routine load task when txn is VISIBLE, not after COMMITTED.
For #2267
1. All non-master daemon thread should also be started after catalog is ready.
For #2354
1. `fixLoadJobMetaError()` should be called after all meta data is read, including image and edit logs.
2. Mini load job should set to CANCELLED when corresponding transaction is not found, instead
of UNKNOWN.
There is bug in Doris version 0.10.x. When a load job in PENDING or LOADING
state was replayed from image (not through the edit log), we forgot to add
the corresponding callback id in the CallbackFactory. As a result, the
subsequent finish txn edit logs cannot properly finish the job during the
replay process. This results in that when the FE restarts, these load jobs
that should have been completed are re-entered into the pending state,
resulting in repeated submission load tasks.
Those wrong images are unrecoverable, so that we have to reset all load jobs
in PENDING or LOADING state when restarting FE, depends on its corresponding
txn's status, to avoid submit jobs repeatedly.
If corresponding txn exist, set load job' state depends on txn's status.
If txn does not exist, may be the txn has been removed due to label expiration.
So that we don't know the txn is aborted or visible. So we have to set the job's state
as UNKNOWN, which need handle it manually.
This variable is mainly for INSERT operation, because INSERT operation has both query and load part.
Using only the exec_mem_limit variable does not make a good distinction of memory limit between the two parts.
This commit will add a new sql mode named MODE_PIPES_AS_CONCAT:
Description:
1、If this mode is active, '||' will be handled different from the original way ('||' and 'or' are seen as the same symbols in Doris) that it can be used to concat two exps and returns a new string. For example, 'a' || 'b' = 'ab' and 1 || 0 = '10'.
2. User can active this mode by "SET sql_mode = PIPES_AS_CONCAT", and deactive it by "SET sql_mode = '' ".
Currently in the date_add/date_sub functions (DATE_ADD(DATETIME date,INTERVAL expr type)), the expr parameter is the interval you want to add.
Doris will convert these functions to xxx_sub/xxx_add. However, there is only the days_add function in fe, which causes other date_add formats, such as select date_add('2010-11-30 23:59:59', INTERVAL 2 DAY), cannot be pruned.
So I've added other functions to support fe partition prune
