Features Introduced in Previous Versions
New Features in VectorH 4.2
The following new features are available in VectorH 4.2:
• Security:
– Data at rest encryption allows specific table columns to be encrypted
– Query level auditing (C2 security)
• Performance optimization:
– Query performance optimizations, including union flattening at the server, session, and statement levels
– I/O optimizations
• YARN integration:
– Ability to preempt VectorH jobs when higher priority jobs require it
– High availability during HDFS DataNode failure
• Installer improvements, including RPM support
• Support for 2048 columns
• Direct table unloading to CSV files through the CSVEXPORT system command.
• Additions to aggregate window functions:
– ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW
– ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
– ROWS BETWEEN CURRENT ROW AND CURRENT ROW
– Named windows
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