Sometimes we want to detect the hotspot of a cluster, for example, hot scanned tablet, hot wrote tablet,
but we have no insight about tablets in the cluster.
This patch introduce tablet level metrics to help to achieve this object, now support 4 metrics on tablets: `query_scan_bytes `, `query_scan_rows `, `flush_bytes `, `flush_count `.
However, one BE may holds hundreds of thousands of tablets, so I add a parameter for the metrics HTTP request,
and not return tablet level metrics by default.
Persistence stale rowsets meta. When BE reboots, stale rowsets meta
can resume and the stale version can also be readable before stale gc time.
ISSUE: #4453
In the process of historical data transformation of materialized views, it may occur that the transformation fails due to data quality.
Add an error status code ：OLAP_ERR_DATE_QUALITY_ERR to determine if a data problem is causing the failure
#3344
1. Disable the MySQL client and LZO library by default when building the Doris.
MySQL client library is used for MySQL external table feature.
This feature will be replaced by the new ODBC external table soon.
LZO library is used to compress/decompress data of some old data format of Doris,
which is no longer used anymore.
2. Add missing license to some files.
3. For all non-Apache-License code, all are explained in NOTICE file and the corresponding license is declared.
4. Remove the js source code from webroot, it will be downloaded as thirdparty
* Implements the grammar of the batch delete #4051
* Process create, alter table when table has delete sign column
* Support the syntax for enabling the delete column
* Automatically filtered deleted data in the select statement.
* Automatically add delete sign when create rollup table
TODO:
* Optimize the reading and compaction logic on the be side, so that the data marked as deleted will be completely deleted during base compaction
Compaction rules optimization, the detail problem description and design to see #4164.
This pr commits 2 functions:
(1) add the cumulative policy configable, and implement original policy.
(2) implement universal policy, the optimization version in #4164.
(1) Add LargeInt cast to date and datatime, see #3864
LargeInt can cast to date and datatime. Fix this error:
Unable to find _ZN5doris13CastFunctions16cast_to_date_valEPN9doris_udf15FunctionContextERKNS1_11LargeIntValE
(2) Add local timezone info to stale_version_path_json_doc rest api
Add timezone to "last create time" field.
{
"path id": "1",
"last create time": "1970-01-01 10:46:40 +0800",
"path list": "1 -> [2-3] -> [4-5]"
},
and add timezone to the test unix, see #4121 .
1. Rename run-ut.sh to run-be-ut.sh
2. Find all test files from build dir instead of declaring separately in the script
3. Add gtest output to collect the result of unit test.
Redesign metrics to 3 layers:
MetricRegistry - MetricEntity - Metrics
MetricRegistry : the register center
MetricEntity : the entity registered on MetricRegistry. Generally a MetricRegistry can be registered on several
MetricEntities, each of MetricEntity is an independent entity, such as server, disk_devices, data_directories, thrift
clients and servers, and so on.
Metric : metrics of an entity. Such as fragment_requests_total on server entity, disk_bytes_read on a disk_device entity,
thrift_opened_clients on a thrift_client entity.
MetricPrototype: the type of a metric. MetricPrototype is a global variable, can be shared by the same metrics across
different MetricEntities.
This PR is to add inPredicate support to delete statement,
and add max_allowed_in_element_num_of_delete variable to
limit element num of InPredicate in delete statement.
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.
Using slice->data to create HyperLogLog, it will exec HyperLogLog(Slice(const char*)). Then Slice(const char*) will use strlen(data) to calc the size. But the slice in this unit test isn't a C-string. Need to use Slice.
Related issue #4017, main changes as follows:
1. Add expired_snapshot_rs_version_map，_expired_snapshot_rs_metas，
2. Add VersionedRowsetTracker record compacted path version
3. Record path version when rowsets compact
4. In gc process, add expired snapshot rowsets to unused set to remove.
+ Building the materialized view function for schema_change here based on defineExpr.
+ This is a trick because the current storage layer does not support expression evaluation.
+ count distinct materialized view will set mv_expr with to_bitmap or hll_hash.
+ count materialized view will set mv_expr with count.
+ Support to regenerate historical data when a new materialized view is created in BE。
+ Support to_bitmap function
+ Support hll_hash function
+ Support count(field) function
For #3344
1、Add a PushBrokerReader in push_handle.cpp.
2、PushBrokerReader wraps the ParquetScanner to support reading data from parquet format file through broker.
mainly used for Spark Load process to calculate approximate deduplication value and then serialize to parquet file.
Try to keep the same calculation semantic with be's C++ version
StorageEngine::open just return a very vague status info when failed,
we have to check logs to find out the root reason, and it's not
convenient to check logs if we run unit tests in CI dockers.
It would be better to return more detailed failure info to point out
the root reason, for example, it may return error status with message
"file descriptors limit is too small".
TabletMeta's _preferred_rowset_type is not initialized after object constructing and
may be a random value, and this field is not updated when create ALPHA_ROWSET tablet,
and it will not be serialized into pb in this case. So if cloning an ALPHA_ROWSET
tablet from another BE, this new created local tablet's _preferred_rowset_type field
may be random as BETA_ROWSET and can not be overwrote after cloned, then new input
rows will be wrote as BETA_ROWSET format which is not we expect.
This patch fix this bug by giving _preferred_rowset_type a default value and updating
this field when create any type of tablet, and add an unit test and related overwrite
equal operator functions.
Fix some unittest failed due to glog， this may be we change the ut build dir，and the log path is not exist in new build dir， so we change the log from file to stdout
LSAN detected errors have been fixed by a prior pathch (#3326), but
there are still some ASAN detected errors.
This patch try to fix these errors to make Doris BE more robustness.
And then we can add CI run in LSAN/ASAN mode to detect memory errors
as early as possible.
We can observe the workload of BE, and also it's a way to check
whether there is any problem in BE, like some container increase
too large and lead to OOM.
This patch add the following metrics:
```
Name Description
rowset_count_generated_and_in_use The total count of rowset id generated and in use since BE last start
unused_rowsets_count The total count of unused rowset waiting to be GC
broker_count The total count of brokers in management
data_stream_receiver_count The total count of data stream receivers in management
fragment_endpoint_count The total count of fragment endpoints of data stream in management, should always equal to data_stream_receiver_count
active_scan_context_count The total count of active scan contexts
plan_fragment_count The total count of plan fragments in executing
load_channel_count The total count of load channels in management
result_buffer_block_count The total count of result buffer blocks for queries, each block has a limited queue size (default 1024)
result_block_queue_count The total count of queues for fragments, each queue has a limited size (default 20, by config::max_memory_sink_batch_count)
routine_load_task_count The total count of routine load tasks in executing
small_file_cache_count The total count of cached small files' digest info
stream_load_pipe_count The total count of stream load pipes, each pipe has a limited buffer size (default 1M)
tablet_writer_count The total count of tablet writers
brpc_endpoint_stub_count The total count of brpc endpoints
```
Now, column with REPLACE/REPLACE_IF_NOT_NULL can be filtered by ZoneMap/BloomFilter
when the rowset is base(version starts with zero). Always we think is an optimization.
But when some case, it will occurs bug.
create table test(
k1 int,
v1 int replace,
v2 int sum
);
If I have two records on different two versions
1 2 2 on version [0-10]
1 3 1 on version 11
If I perform a query
select * from test where k1 = 1 and v1 = 3;
The result will be 1 3 1, this is not right because of the first record is filtered.
The right answer is 1 3 3, the v2 should be summed.
Remove this optimization is necessity to make the result is right.
main refactor points are:
- Use a single get_absolute_tablet_path function instead of 3
independent functions
- Remove meaningless return value of register_tablet and deregister_tablet
- Some typo and format
This PR is to enhance the performance for txn manage task, when there are so many txn in
BE, the only one txn_map_lock and additional _txn_locks may cause poor performance, and
now we remove the additional _txn_locks and split the txn_map_lock into many small locks.
In the past, when we want to modify some BE configs, we have to modify be.conf and then restart BE.
This patch provides a way to modify configs in the type of 'threshold', 'interval', 'enable flag'
when BE is running without restarting it.
You can update a single config once by BE's http API: `be_host:be_http_port/api/update_config?config_name=new_value`
This CL fixes a bug that could cause wrong answer for beta rowset with nullable column. The root cause is that NullBitmapBuilder is not reset when the current page doesn't contain NULL, which leads to wrong null map to be written for the next page.
Added a test case to reproduce the problem.
The main optimization points:
1. Use std::unordered_set instead of std::set, and use RowsetId.hi as RowsetId's hash value.
2. Minimize the scope of SpinLock in UniqueRowsetIdGenerator.
Profile comparation:
* Run UniqueRowsetIdGeneratorTest.GenerateIdBenchmark 10 times
old version | new version
6s962ms | 3s647ms
6s139ms | 3s393ms
6s234ms | 3s686ms
6s060ms | 3s447ms
5s966ms | 4s127ms
5s786ms | 3s994ms
5s778ms | 4s072ms
6s193ms | 4s082ms
6s159ms | 3s560ms
5s591ms | 3s654ms
Earlier we introduced `BlockManager` to separate data access logic from
underlying file read and write logic.
This CL further unifies all `SegmentV2` data access to the `BlockManager`,
removes the previous `FileManager` class, and move the file cache to the `FileBlockManager`.
There are no logical changes to this CL.
After this CL, all user table data is read through the `WritableBlock` and `ReadableBlock`
returned by the `BlockManager`, and no file operations are performed directly.
