Pre Release v5.1.0-alpha

Pre Release v5.1.0-alpha

TiFlash v4.0.13

Improvements

• Automatically clean archived data to free up disk space

Bug Fixes

• Fix the issue that number of delta-merge-tasks is not reported to Prometheus
• Fix the TiFlash panic issue that occurs during Segment Split
• Fix the issue that the Region write Duration (write blocks) panel in Grafana is shown in a wrong place
• Fix the potential issue that the storage engine fails to remove data
• Fix the issue of incorrect results when casting the TIME type to the INTEGER type
• Fix a bug that the behavior of the bitwise operator is different from that of TiDB
• Fix the issue of incorrect results when casting the STRING type to the INTEGER type
• Fix the issue that consecutive and fast writes might make TiFlash out of memory
• Fix the potential issue that the exception of null pointer might be raised during the table GC
• Fix the TiFlash panic issue that occurs when writing data to dropped tables
• Fix the TiFlash panic issue that occurs during BR restore
• Fix a bug that the weights of some characters are wrong when using the general CI collation
• Fix the potential issue that data will be lost in tombstoned tables
• Fix the issue of incorrect results when comparing the string which contains zero bytes
• Fix the issue that the logical function returns wrong results if the input column contains null constants
• Fix the issue that the logical function only accepts the numeric type
• Fix the issue of incorrect results that occurs when the timestamp value is 1970-01-01 and the timezone offset is negative
• Fix the issue that hash value of Decimal256 is not stable

TiFlash v5.0.1

New Features

• Add tools to check the status of tiflash replica for online rolling updates

Improvements

• Optimize the configuration file and remove useless items
• Reduce the size of TiFlash binary files
• Use an adaptive aggressive GC strategy to reduce memory usage

Bug Fixes

• Fix the issue of incorrect execution results when the default value of the binary type column contains leading or tailing zero bytes
• Fix a bug that TiFlash fails to synchronize schema if the name of the database contains special characters
• Fix the issue of incorrect results when handling the IN expression with decimal values
• Fix a bug that the metric for the opened file count shown in Grafana is high
• Fix a bug that TiFlash does not support the Timestamp literal
• Fix the potential not responding issue while handling the FROM_UNIXTIME expression
• Fix the issue of incorrect results when casting string as integer
• Fix a bug that the like function might return wrong results

TiFlash v5.0.0

New Features

• Add tools to check the status of tiflash replica for online rolling updates

Improvements

• Optimize the configuration file and remove useless items
• Reduce the size of TiFlash binary files
• Use an adaptive aggressive GC strategy to reduce memory usage

Bug Fixes

• Fix the issue of incorrect execution results when the default value of the binary type column contains leading or tailing zero bytes
• Fix a bug that TiFlash fails to synchronize schema if the name of the database contains special characters
• Fix the issue of incorrect results when handling the IN expression with decimal values
• Fix a bug that the metric for the opened file count shown in Grafana is high
• Fix a bug that TiFlash does not support the Timestamp literal
• Fix the potential not responding issue while handling the FROM_UNIXTIME expression
• Fix the issue of incorrect results when casting string as integer
• Fix a bug that the like function might return wrong results

TiFlash v4.0.11

add function tidb_divide (#1458)

* support tidb_divide

* fix build

* fix build

* fix

* refine

* fix bug

* fix

* add ut

TiFlash v5.0.0-rc

support lossless schema change for enum type (#1334) (#1335)

TiFlash v4.0.10

support lossless schema change for enum type (#1334) (#1336)

TiFlash v5.0.0-rc.x

Update raftstore proxy to support new proto about hibernating (#1329)

Signed-off-by: Tong Zhigao <[email protected]>

TiFlash v4.0.9

Fix parse date format with multiple consecutive seperators (#1292) (#…