Weekly update in TiDB

Last week, we landed 83 PRs in the TiDB repository.

Added

• Add the vectorized evaluation methods to Expression
• Support CAST as float

Improved

• Add Region-ID when getting the MVCC by Handle
• Move the log operation out of the lock scope
• Add split-region-max-num in config to control the maximum number of split Regions
• Speed up the operation of admin check table

Fixed

• Fix the bug of loading the dropped database schema and the db-table API error
• Fix the issue that baseExecutor's children might not be closed
• Fix the data race of admin check table
• Invalidate a store's Regions after the store is removed in KV
• Fix a bug that window functions do not check IGNORE NULLS
• Fix the wrong estimation for the time values
• Fix a compatibility bug for the window function
• Fix the display of on update in CURRENT_TIMESTAMP with decimal
• Make grant all privileges work right
• Fix a bug that an error occurs when the range partition is added and the value is negative

Weekly update in TiSpark

Last week, we landed 19 PRs in the TiSpark repository.

Fixed

• Fix the issue that view cannot be parsed
• Fix the issue that the Range Partition might throw UnsupportedSyntaxException when the unsupported partition function is used
• Enable TiSpark to read data from a hash partition table
• Fix java.lang.IncompatibleClassChangeError when submitting with spark-2.4.3
• Fix the cost model in the table scan
• Fix the error message when encountering UninitializedType such as TypeDecimal

Weekly update in TiKV and PD

Last week, we landed 31 PRs in the TiKV and PD repositories.

Added

• Add evaluate_ctx which returns EvalContext
• Add DecimalDivide to the RPN expression framework
• Add a convert trait and implement ConvertTo<Decimal>
• Add the multiplication arithmetic for the RPN function framework
• Enable libressl by default
• Collect the CPU usage and the I/O rates of threads in disks
• Add a convert trait and implement the ConvertTo<u64> string
• Add CONTROL functions

Improved

• Optimize the metrics of the local reader
• Clean up the statistics of read flow
• Speed up test_many_tombstones
• Add an INFO log for the bootstrap cluster
• Improve the arithmetic operation with ctx
• Make several INFO logs DEBUG and refine some log messages
• Re-organize the schedule package
• Implement the lazy expiration of DetectTable
• Use trait to re-organize CONVERT to the INT/UINT functions
• Make the Coprocessor DAG independent of tikv::storage
• Add the document information with the note on the document migration
• Assign a structure for the KeyIsLocked content
• Move the raftkv from storage to server
• Extract the Coprocessor DAG
• Remove the expire-timer
• Eliminate CleanUpWaitFor when the waiter timeouts
• Pass Config when creating WaiterManager and Detector

Fixed

• Fix the filter of the replica checker
• Update the rust-rocksdb dependency and fix the compilation error on gcc9.1
• Fix the issue that merge might crash in extreme conditions
• Remove the unexpected fmt.Sprintf

New contributors (Thanks!)

tikv:

• jiyingtk

tidb-operator:

• yeya24

parser:

• imtsuki
• leiysky

docs:

• wolfstudy