[BEAM-9461] CLONE - To use ByteArrayOutput/InputStream without synchronization

• Type: Wish
• Status: Resolved
• Priority: P3
• Resolution: Abandoned
• Fix Version/s: Not applicable
• Component/s: sdk-java-core
• Labels: Done
• Assignee: Unassigned
• Reporter: Kyoungha Min
• Created: 06/Mar/20 07:28
• Updated: 06/Oct/20 21:59
• Resolved: 06/Mar/20 07:29

Description

It would be nice to see Beam using custom ByteArrayInput/OutputStream without synchronization. It currently uses `ThreadLocal`, so using thread-safe stream seems unnecessary. And all streams should never be access by more than 1 thread from the start anyway.

Simply getting rid of the synchronized keyword will speed up about ~500 times for single byte access. Something like org.apache.beam.sdk.util.VarInt will get significant benefit from it.

Issue Links

• is a clone of: BEAM-9332 To use ByteArrayOutput/InputStream without synchronization