abstractdog opened a new issue, #3769: URL: https://github.com/apache/parquet-java/issues/3769
### Describe the enhancement requested RunLengthBitPackingHybridDecoder.readNext() allocates a fresh int[], a fresh byte[], and a DataInputStream wrapper on every bit-packed run it decodes. Since this decoder is the primary path for definition levels, repetition levels, and dictionary indices on every column read, those allocations directly inflate young-generation GC pressure on scan-heavy workloads. The existing code even flags it: // TODO: reuse a buffer. ### Component(s) _No response_ -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
