[KAFKA-16397] Use ByteBufferOutputStream to avoid array copy

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.8.0
• Assignee: Chia-Chuan Yu
• Reporter: Chia-Ping Tsai
• Created: 21/Mar/24 03:06
• Updated: 29/Mar/24 12:28
• Resolved: 29/Mar/24 12:28

Description

from https://github.com/apache/kafka/pull/15148#discussion_r1531889679

source code:
https://github.com/apache/kafka/blob/trunk/clients/src/main/java/org/apache/kafka/common/telemetry/internals/ClientTelemetryUtils.java#L216

we can use ByteBufferOutputStream to collect the uncompressed data, and then return the inner buffer directly instead of copying full array.

Issue Links

• links to: GitHub Pull Request #15589
• links to: GitHub Pull Request #15589