Increase parquet read buffer size #2924
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Page sizes for parquet files tent to be larger than the current read buffer which results in more page reads than ideal. This change increases the size from 256KB to 2MB. In tests against a GCS backed storage this yields around 5-10% improved response time for the
SelectMergeByStacktracesAPI and in a synthetic test with higher latencies towards the object store gains of up to 20% can be observed.@cyriltovena