[CALCITE-1091] Reduce Avatica RPC latency umbrella

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: avatica-1.7.0
• Component/s: avatica
• Assignee: Josh Elser
• Reporter: Josh Elser
• Created: 17/Feb/16 20:50
• Updated: 14/Mar/16 15:07
• Resolved: 03/Mar/16 23:02

Description

I've been spending a bit of time looking at performance improvements to Avatica with the restriction of reducing the latency of operations (ignoring performance gains through concurrency).

I'll use this as an umbrella for the issues I've run into so far.

Issue Links

• links to: PR

Sub-Tasks

• Statement is unnecessarily sent from client in update (write) path: Closed
• Cache FieldDescriptors when deserializing Protobufs: Closed
• Smarter use of List construction: Closed
• Replace AvaticaUtils.readFully(InputStream)'s use of ByteArrayOutputStream: Closed
• Use commons httpclient instead of JDK http client: Closed
• "noop" JDBC driver for benchmarking/testing Avatica: Closed
• Additional metrics instrumentation: Closed