AVRO-4300: [java] Bound array/map allocation and skipping for zero-byte elements and on the fast reader path#3865

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iemejia wants to merge 24 commits into

apache:mainfrom

iemejia:AVRO-4300-java-collection-zero-byte

Commits on Jul 12, 2026

AVRO-4300: [java] Bound zero-byte array element allocation
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AVRO-4300: [java] Apply the available-bytes check on the fast reader path
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AVRO-4300: [java] Cover all collection/reader combinations in tests
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AVRO-4300: [java] Test negative block count is bounded on both readers
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AVRO-4300: [java] Test Long.MIN_VALUE block count is handled safely
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AVRO-4300: [java] Bound the array/map skip path
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AVRO-4300: [java] Fix limit Javadoc markup; clamp allocation cap to VM limit
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AVRO-4300: [java] Fix limit Javadoc grammar; make heap-cap test deterministic
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AVRO-4300: [java] Reword zero-byte Javadoc; tighten skip test assertions
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AVRO-4300: [java] Apply spotless formatting to reworded Javadoc
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AVRO-4300: [java] Clarify zero-byte comments to match the actual predicate
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AVRO-4300: [java] Reject Long.MIN_VALUE block count as malformed
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AVRO-4300: [java] Clamp collection preallocation from declared block count
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AVRO-4300: [java] Reject out-of-range union and enum indices with AvroTypeException
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AVRO-4300: [java] Reword remaining "zero-byte" docs to the actual predicate
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AVRO-4300: [java] Half-open range in enum messages; finish zero-byte reword
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Commits on Jul 13, 2026