v0.8.4

Features

• Support new SQL statements SHOW CREATE TABLE, TRUNCATE and [Alpha] LEFT JOIN (#3500 #3542 @dl239, #3576 @aceforeverd)
• Support specifying the compression option during table creation (#3572 @dl239)
• Optimize the insertion performance of Java SDK (#3525 @dl239)
• Support defining a window without ORDER BY clause (#3554 @aceforeverd)
• Support the authentication for Zookeeper connection (#3581 @dl239)
• [Alpha] Support LAST JOIN on a window clause (#3533 #3565 @aceforeverd)
• Enhance the monitoring module (#3588 @vagetablechicken)
• Support the date before 1900 in datediff (#3499 @aceforeverd)
• Enhance the diagnostic tool (#3559 @vagetablechicken)
• Check the status of table on CLI startup (#3506 @vagetablechicken)
• Upgrade the version of brpc to 1.6.0 (#3415 #3557 @aceforeverd)
• Improve the documents (#3517 @dl239, #3520 #3523 @vagetablechicken, #3467 #3468 #3535 #3485 #3478 #3472 #3486 #3487 #3537 #3536 @TanZiYen)
• Other minor features (#3587 @vagetablechicken, #3512 @dl239)

Bug Fixes

• The SQL compiling fails if there is LAST JOIN in WINDOW UNION statement in the request mode. (#3493 @aceforeverd)
• Tablet may crash after deleting an index in certain cases (#3561 @dl239)
• There are some syntax errors in maintenance tools (#3545 @vagetablechicken)
• Updating TTL fails if the deployment SQL contains multpile databases (#3503 @dl239)
• Other minor bug fixes (#3518 #3567 #3604 @dl239, #3543 @aceforeverd, #3521 #3580 @vagetablechicken, #3594 #3597 @tobegit3hub)

Code Refactoring

#3547 @aceforeverd