Release notes of EMR V3.30.X

For more information, see SmartData 3.0.x.

• Metadata from Alibaba Cloud Data Lake Formation (DLF) is supported.
• Has dependencies are updated to 2.0.1.
• Issues caused by backticks (`) in Streaming SQL are fixed.
• The JAR package of Delta is removed. Delta is separately deployed.
• Logs are stored in HDFS directories.

• Metadata from Alibaba Cloud DLF is supported.
• The issue caused when you read an empty Delta table directory and write data into a dummy file is fixed.
• Has dependencies are updated to 2.0.1.

• Metadata from Alibaba Cloud DLF is supported.
• The limits on reading a Delta table are eliminated.
• The issue of no Java Virtual Machine (JVM) configurations in high security mode is fixed.
• Has dependencies are updated to 2.0.1.

• The Hot-swap Disk Module mode is supported.
• Has dependencies are updated to 2.0.1.

• Issues related to YARN RMZKStateStore are fixed.
• Snappy files generated from Log Service are supported.
• Directory configurations in Local mode of MapReduce are modified to resolve the problems that occur in directory permission checks.
• The Hot-swap Disk Module mode is supported.
• Logs are stored in HDFS directories.
• Has dependencies are updated to 2.0.1.

• Internal IP addresses can be bound to Elastic Compute Service (ECS) instances to start service ports.
• Has dependencies are updated to 2.0.1.

• Flink-VVP is updated to a version in the range of 1.11 to 2.2.2.
• SQL and Autopilot features are supported.

• Data can be written into Object Storage Service (OSS) in cache mode. Exactly-once semantics are supported based on the Flink checkpoint and the data sources that support data retransmission.
• Features of open source Flink 1.11.1 are supported. An SQL statement can insert data into different destination tables or partitions and generate multiple channels of output.
• Has dependencies are updated to 2.0.1.

• Custom configuration of parameters on the catalogd.flgs, impalad.flgs, and statestored.flgs tabs is supported.
• Shiro is updated to 1.6.0.
• Has dependencies are updated to 2.0.1.

• Default settings of AM memory parameters are optimized.
• Has dependencies are updated to 2.0.1.