[ANNOUNCE] Apache IoTDB 1.0.1 released

[Gaofei Cao <ca...@apache.org>]

The Apache IoTDB team is pleased to announce the release of Apache IoTDB
1.0.1.

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.

This is a bug-fixed version of 1.0.0, which includes a number of new
features and improvements:

## New Features

* [IOTDB-5102] Support explain the sqls using align by device clause
* [IOTDB-5282] Add SQL show variables, which can display the current
cluster variables

## Improvements

* [IOTDB-4595] Add real-time monitoring data for tsfile merge
* [IOTDB-5125] Stop the process when port is already in use when
launching ConfigNode or DataNode
* [IOTDB-5185] Fixed that old snapshot is not deleted in IoTConsensus
* [IOTDB-5202] Support showing regions regarding database
* [IOTDB-5205] Construct Cluster Node startup protocol, reject start
or restart request of ConfigNode or DataNode when using wrong data
* [IOTDB-5208] Fix increase of file handles when TsFileResource is
degraded and compacted with fast performer
* [IOTDB-5223] Cause DataNode startup to fail when multiple disks are
configured in the data directory and the dataRegion consensus protocol
uses Ratis
* [IOTDB-5232] Add Schema Memory Usage metric monitor
* [IOTDB-5249] Add interface to set datatype when users customize the
payload formatter of mqtt
* [IOTDB-5258] Add timeout parameter for ExportCSV/ExportTsFile Tool
* [IOTDB-5306] Change the default port of ConfigNode and DataNode
* [IOTDB-5326] Add cluster_name parameter to distinguish different cluster
* [IOTDB-5389] Cause DataNode starup to fail when wal_mode is disabled
in IoTConsensus

## Bug Fixes

* [IOTDB-4978] Fix possible deadLock while using select into
* [IOTDB-5090] Fix the NPE when executing stop-datanode.sh
* [IOTDB-5116] Fix wrong empty result set in aggregation query while
there is no data in queried timeseries
* [IOTDB-5118] Fix that datanode opens too many file handles （TYPE DIR）
* [IOTDB-5174] Fixed restart failure when IoTConsensus hostname containing '-'
* [IOTDB-5126] Fix that show-regions show IP rather than hostname even
though the hostname is used when registering
* [IOTDB-5135] Fix the Sync snapshot failure (also blocks ConfigNode
snapshot) when sync file is empty
* [IOTDB-5141] Fix fast compaction scheduler bug
* [IOTDB-5144] Fix classCastException in IoTDBDatabaseMetadata of jdbc
* [IOTDB-5158] Fix failure of getting devices from tsfile
* [IOTDB-5170] Fix the problem that datanode is closed when executing
stop-confignode.bat on Windows platform
* [IOTDB-5210] Fix concurrent bug caused by init and close of driver
* [IOTDB-5212] Upgrade an illegal CQ verification prompt from v0.14.0 to v1.0
* [IOTDB-5215] Fix the wrong usage of chunkPointNumLowerBound in IoTDBDescriptor
* [IOTDB-5216] Fix order by timeseries doesn't take effect in aligned last query
* [IOTDB-5222] Fix the load of some metric related configuration
* [IOTDB-5231] Fix that Datanode could not start when binding 9091 error
* [IOTDB-5233] Correct the message of unsupported thrift interface of
schema template
* [IOTDB-5236] Fix DeleteData Python API cannot work
* [IOTDB-5240] Fix schema template timeseries read/write error after restart
* [IOTDB-5261] Fix the number of clients in client pool of
AsyncIoTConsensusServiceClient can not be changed through
dn_max_connection_for_internal_service
* [IOTDB-5266] Refine the code of cross selector and fix the bug when
using FileTImeIndex
* [IOTDB-5269] Fix wrong data of devices ought to be deleted after
executing `delete from` sql
* [IOTDB-5277] Fix DataNode restart failure when SchemaRegion loading snapshot
* [IOTDB-5278] Fix JDBC Driver cannot connect to the dbeaver
* [IOTDB-5285] Fix TimePartition error when restarting with different
time partition configuration
* [IOTDB-5286] Fix target files are selected to participate in other
compaction task
* [IOTDB-5313] Fix Python client doesn't handle REDIRECTION_RECOMMEND correctly
* [IOTDB-5452] Add leastDataRegionGroupNumSetByUser examination to
ensure that leastDataRegionGroupNum will not be changed by system
* [IOTDB-5498] Fix SessionPool OOM problem when the number of devices
and sessions is large
* [IOTDB-5501] Fix memory leak in MemoryPool
* [IOTDB-5525] Fix the partition error of device after partition fetcher

The full release note is available at:
https://raw.githubusercontent.com/apache/iotdb/v1.0.1/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


Regards,
The Apache IoTDB team