[ANNOUNCE] Apache IoTDB 0.12.5 released

[Steve Yurong Su <ro...@apache.org>]

The Apache IoTDB team is pleased to announce the release of Apache IoTDB 0.12.5.

Apache IoTDB (Database for Internet of Things) is an IoT native
database with high performance for data management and analysis,
deployable on the edge and the cloud.

Apache IoTDB 0.12.5 is a bug-fix version from 0.12.4, which includes a
number of improvements and bug fixes:

## New Features
* [IOTDB-2078] Split large TsFile tool
* [IOTDB-2192] Support extreme function

## Improvements
* [IOTDB-1297] Refactor the memory control when enabling time partitions
* [IOTDB-2195] Control the concurrent query execution thread
* [IOTDB-2475] Remove sg not ready log in batch process
* [IOTDB-2502] Add query sql in error log if encountering exception
* [IOTDB-2506] Refine the lock granularity of the aggregation query
* [IOTDB-2534] add character support while using double quote
* [IOTDB-2562] Change default value of sync mlog period parameter
* Avoid too many warning logs being printed, when opening too many file handlers

## Bug Fixes
* [IOTDB-1960] Fix count timeseries bug in cluster mode
* [IOTDB-2174] Fix Regexp filter serializing and deserializing error
* [IoTDB-2185] fix get an exception bug when parsing the header of CSV
* [IOTDB-2194] Fix SHOW TIMESERIES will only display 2000 timeseries
in cluster mode
* [IOTDB-2197] Fix datatype conversion exception in Spark Connector
* [IOTDB-2209] Fix logback CVE-2021-42550 issue
* [IOTDB-2219] Fix query in-memory data is incorrect in cluster mode
* [IOTDB-2222] Fix OOM and data was written in incorrectly bugs of
Spark Connector
* [IOTDB-2251] [IOTDB-2252] Fix Query deadlock
* [IOTDB-2282] fix tag recover bug after tag update
* [IOTDB-2320] MemoryLeak cause by wal Scheduled trim task thread
* [IOTDB-2381] Fix deadlock caused by incorrect buffer pool size counter
* [IOTDB-2400] Fix series reader bug
* [IOTDB-2426] WAL deadlock caused by too many open files
* [IOTDB-2445] Fix overlapped data should be consumed first bug
* [IOTDB-2499] Fix division by zero error when recovering merge
* [IOTDB-2507] Fix NPE when merge recover
* [IOTDB-2528] Fix MLog corruption and recovery bug after killing system
* [IOTDB-2532] Fix query with align by device can't get value after clear cache
* [IOTDB-2533] Fix change max_deduplicated_path_num does not take effect
* [IOTDB-2544] Fix tag info sync error during metadata sync
* [IOTDB-2550] Avoid show timeseries error after alter tag on sync sender
* [IOTDB-2567]  Fix thread and ByteBuffer leak after service stopped
* [IOTDB-2568] "show query processlist" is blocked
* [IOTDB-2580] Fix DirectByteBuffer and thread leak when deleting storage group
* [IOTDB-2584] Fix cross space compaction selector
* [IOTDB-2603] Fix compaction recover
* [IOTDB-2604] Fix batch size is invalid in import-csv tool
* [IOTDB-2620] Unrecognizable operator type (SHOW) for AuthorityChecker
* [IOTDB-2624] Fix "overlapped data should be consumed first" occurs
when executing query
* [IOTDB-2640] Fix cross compaction recover bug
* [IOTDB-2641] Fix time range of TsFile resource overlaps after unseq compaction
* [IOTDB-2642] Fix the new file has a higher compact priority than the
old file in unseq compaction
* Fix a logical bug in processPlanLocally in cluster mode
* Throw Exception while using last query with align by device
* Add a judgement to determine raft log size can fit into buffer
before log appending in cluster mode
* Fix grafana can't be used bug

The full release note is available at:
https://raw.githubusercontent.com/apache/incubator-iotdb/v0.12.5/RELEASE_NOTES.md

The release is available for download at:
http://iotdb.apache.org/Download

Maven artifacts for JDBC driver, session SDK, TsFile SDK,
Spark-connector, Hadoop-connector, Hive-connector, and Flink-connector
can be found at:
https://search.maven.org/search?q=g:org.apache.iotdb

Docker image of IoTDB server can be found at:
https://hub.docker.com/r/apache/iotdb

Python API package can be found at:
https://pypi.org/project/apache-iotdb/

Regards,
The Apache IoTDB team