Bug Fixes

• [GITHUB-3373] Remove the broken cached leader connection & optimize the insertRecords method in session
• [IOTDB-1433] Fix bug in getMetadataAndEndOffset when querying non-exist device
• [IOTDB-1432] fix level compaction loss data
• [IOTDB-1427] Fix compaction lock with query
• [IOTDB-1420] Fix compaction ttl bug
• [IOTDB-1419] Remove redundant clearCompactionStatus, fix continuous compaction doesn't take effect when enablePartition
• [IOTDB-1415] Fix OOM caused by ChunkCache
• [IOTDB-1414] NPE occurred when call getStorageGroupNodeByPath() method using not exist path
• [IOTDB-1412] Unclear exception message thrown when executing empty InsertTabletPlan
• [IOTDB-1411] Fix thriftMaxFrameSize and thriftDefaultBufferSize does not in effect
• [IOTDB-1398] Do not select unseq files when there are uncompacted old unseq files
• [IOTDB-1390] Fix unseq compaction loss data bug
• [IOTDB-1384] Fix group by bug
• [ISSUE-3378] Fix NPE when clear upgrade folder; Fix some upgraded pageHeader missing statistics
• [GITHUB-3339] Try to fix sg dead lock
• [GITHUB-3329] Fix upgrade NPE and DeadLock
• [GITHUB-3319] Fix upgrade tool cannot close file reader
• [IOTDB-1212] Fix The given error message is not right when executing select sin(non_existence) from root.sg1.d1
• [IOTDB-1219] Fix a potential NPE issue in UDF module
• [IOTDB-1286] Fix 4 C++ mem-leak points
• [IOTDB-1294] Fix delete operation become invalid after compaction
• [IOTDB-1313] Fix lossing time precision when import csv with unsupported timestamp format
• [IOTDB-1316] The importCsv tool should continue inserting if a part of insertion failed
• [IOTDB-1317] Fix log CatchUp always failed due to not check the follower's match index
• [IOTDB-1323] Fix return a success message when encounter RuntimeException during the insertion process
• [IOTDB-1325] Fix StackOverflow Exception in group by natural month query
• [IOTDB-1330] Fix the load tsfile bug when the cross multi partition's tsfile only have one page
• [IOTDB-1348] Fix Last plan not work in cluster mode
• [IOTDB-1376] Fix BatchProcessException was not correctly handled in BaseApplier
• [ISSUE-3277] Fix TotalSeriesNumber in MManager counted twice when recovering
• [ISSUE-3116] Fix bug when using natural month unit in time interval in group by query
• [ISSUE-3309] Fix InsertRecordsOfOneDevice runs too slow
• Fix the plan index is always zero when using insertRecords interface to run the cluster
• Add authority check for users create timeseries using executeBatch interface without the privilege
• Fix versionInfo NPE when query upgrading 0.11 tsfile
• Fix upgrade tool cannot load old tsfile if time partition enabled in 0.11
• Fix import csv throw ArrayOutOfIndexError when the last value in a line is null
• Fix upgrade tool cannot close file reader

Improvements

• [GITHUB-3399] Change the default primitive array size to 32
• [IOTDB-1387] Support Without Null ALL in align by device clause, Filter RowRecord automatically if any column in it is null or all columns are null
• [IOTDB-1385] Extract the super user to the configuration
• [IOTDB-1315] ExportCsvTool should support timestamp yyyy-MM-dd'T'HH:mm:ss.SSSZ
• [IOTDB-1339] optimize TimeoutChangeableTSnappyFramedTransport
• [IOTDB-1356] Separate unseq_file_num_in_each_level from selecting candidate file in unseq compaction
• [IOTDB-1357] Compaction use append chunk merge strategy when chunk is already large enough
• [IOTDB-1380] Automatically close the dataset while there is no more data
• Optimize sync leader for meta

New Features

• [GITHUB-3389] TTL can be set to any path
• [GITHUB-3387] Add parameter compaction_interval=10000ms
• [IOTDB-1190] Fully support HTTP URL char set in timeseries path
• [IOTDB-1321][IOTDB-1322] Filter RowRecord automatically if any column in it is null or all columns are null
• [IOTDB-1357] Compaction use append chunk merge strategy when chunk is already large
• [ISSUE-3089] Make it possible for storage groups to have name with hyphen

Miscellaneous changes

• [GITHUB-3346] upgrade netty and claim exclusion for enforcer check
• [IOTDB-1259] upgrade libthrift from 0.12.0/0.13.0 to 0.14.1
• Uncomment the less used configurations
• Enable the configration concurrent_writing_time_partition