Querys like DELETE FROM tbl WHERE decimal_key <= "123.456";
when the type of decimal_key is DECIMALV2 may failed randomly,
this is because the precision and scale is not initialized.
Now, if the length of URL is longer than 4096 bytes, netty will refuse.
The case can be reproduced by constructing a very long URL(longer than 4096bytes)
Add 2 http server params:
1. http_max_line_length
2. http_max_header_size
If the agg function is sum, the type of mv column will be bigint.
The only exception is that if the base column is largeint, the type of mv column will be largeint.
If the agg function is min or max, the type of mv column will be same as the type of base column.
For example, the type of mv column is smallint when the agg function is min.
We make all MemTrackers shared, in order to show MemTracker real-time consumptions on the web.
As follows:
1. nearly all MemTracker raw ptr -> shared_ptr
2. Use CreateTracker() to create new MemTracker(in order to add itself to its parent)
3. RowBatch & MemPool still use raw ptrs of MemTracker, it's easy to ensure RowBatch & MemPool destructor exec
before MemTracker's destructor. So we don't change these code.
4. MemTracker can use RuntimeProfile's counter to calc consumption. So RuntimeProfile's counter need to be shared
too. We add a shared counter pool to store the shared counter, don't change other counters of RuntimeProfile.
Note that, this PR doesn't change the MemTracker tree structure. So there still have some orphan trackers, e.g. RowBlockV2's MemTracker. If you find some shared MemTrackers are little memory consumption & too time-consuming, you could make them be the orphan, then it's fine to use the raw ptr.
If table1 and table2 are colocated using column k1, k2.
Query should contains all of the k1, k2 to apply colocation algorithm.
Query like select * from table1 inner join table2 where t1.k1 = t2.k1 can not be used as colocation.
We add the rule to avoid the problem.
1. Add Exec msg for BufferedBlockMgr for debug tuning
2. Change the API of Consume Memory? We will use it in HashTable in the future
3. Fix mistake of count _unfullfilled_reserved_buffers in BufferedBlockMgr
This PR is mainly do three things:
1. Fix fe meta version bug introduced by #4029 , when fix conflict with #4086
2. Make drop check code easy to read
3. Add doc content for drop meta check
Try to select the BE with an existing replicas as the destination BE for
REPLICA_RELOCATING clone task.
Fix#4147
Also add 2 new FE configs `max_clone_task_timeout_sec` and `min_clone_task_timeout_sec`
This CL mainly changes:
1. Add 2 new FE modules
1. fe-common
save all common classes for other modules, currently only `jmockit`
2. spark-dpp
The Spark DPP application for Spark Load. And I removed all dpp related classes to this module, including unit tests.
2. Change the `build.sh`
Add a new param `--spark-dpp` to compile the `spark-dpp` alone. And `--fe` will compile all FE modules.
the output of `spark-dpp` module is `spark-dpp-1.0.0-jar-with-dependencies.jar`, and it will be installed to `output/fe/spark-dpp/`.
3. Modify some bugs of spark load
This PR is to support grammar like the following: INSTALL PLUGIN FROM [source] [PROPERTIES("KEY"="VALUE", ...)]
user can set md5sum="xxxxxxx", so we don't need to provide a md5 uri.
When Fe uploads the spark archive, the broker may fail to write the file,
resulting in the bad file being uploaded to the repository.
Therefore, in order to prevent spark from reading bad files, we need to
divide the upload into two steps.
The first step is to upload the file, and the second step is to rename the file with MD5 value.
This PR is to ensure that dropped db , table or partition can be with normal state after recovered by user. Commited txns can not be aborted, because the partitions's commited versions have been changed, and some tablets may already have new visible versions. If user just don't want the meta(db, table or partition) anymore, just use drop force instead of drop to skip committed txn check.
from/to_base64 may return incorrect value when the value is null #4130
remove the duplicated base64 code
fix the base64 encoded string length is wrong， and this will cause the memory error
This PR is to use LongAdder or volatile long to replace AtomicLong in some scenarios.
In the statistical summation scenario, LongAdder(introduced by jdk1.8) has better performance than AtomicLong in high concurrency update scenario. And if we just want to keep get and set operation for variable to be atomic, just add volatile at the front of the variable is enough, use AtomicLong is a little heavy.
NOTE: LongAdder is usually preferable to AtomicLong when multiple threads update a common sum that is used for purposes such as collecting statistics, not for fine-grained synchronization control, such as auto-incremental ids.
### Resume
When users use spark load, they have to upload the dependent jars to hdfs every time.
This cl will add a self-generated repository under working_dir folder in hdfs for saving dependecies of spark dpp programe and spark platform.
Note that, the dependcies we upload to repository include:
1、`spark-dpp.jar`
2、`spark2x.zip`
1 is the dpp library which built with spark-dpp submodule. See details about spark-dpp submodule in pr #4146 .
2 is the spark2.x.x platform library which contains all jars in $SPARK_HOME/jars
**The repository structure** will be like this:
```
__spark_repository__/
|-__archive_1_0_0/
| |-__lib_990325d2c0d1d5e45bf675e54e44fb16_spark-dpp.jar
| |-__lib_7670c29daf535efe3c9b923f778f61fc_spark-2x.zip
|-__archive_2_2_0/
| |-__lib_64d5696f99c379af2bee28c1c84271d5_spark-dpp.jar
| |-__lib_1bbb74bb6b264a270bc7fca3e964160f_spark-2x.zip
|-__archive_3_2_0/
| |-...
```
The followinng conditions will force fe to upload dependencies:
1、When fe find its dppVersion is absent in repository.
2、The MD5 value of remote file does not match the local file.
Before Fe uploads the dependencies, it will create an archive directory with name `__archive_{dppVersion}` under the repository.
#4076
1. The visibleVersionTime is updated when insert data to partition
2. GlobalTransactionMgr call partition.updateVisibleVersionAndVersionHash(version, versionHash) when fe is restarted
3. If fe restart, VisibleVersionTime may be changed, but the changed value is newer than the old value
Now, we only check database used data quota when create or alter table, or in some old type load job, but not for routine load job and stream load job. This PR provide a uniform solution to check db used data quota when data load job begin a new txn.
This PR is to optimize the logic of processing unfinishedTask when transaction is publishTimeout, we find errorReplica by
"db -> table -> partition -> index -> tablet(backendId) -> replica" path.
This CL mainly includes:
- add some methods to get thread's stats from Linux's system file in
env.
- support get thread's stats by http method.
- register page handle in BE to show thread's stats to help developer
position some thread relate problem.
This PR is mainly do following three things:
1. Add thread name in fe log to make trace problem more easy.
2. Add agent_task_resend_wait_time_ms config to escape sending duplicate agent task to be.
3. Skip to continue to update replica version when new version is lower than replica version in fe.
Unique Key table will load duplicate rows for different loads.
If exists duplicate row between loads. Compaction will merge this rows.
The statistics should take this merged number into consideration.
Now, We missed the merged number. So it will encounter error when compaction.
Add log to record the compaction point changing.
When OLAP_ERR_BE_SEGMENTS_OVERLAPPING happens,
it will be used to track the bugs. Add issue #4134 link.
