wgtmac commented on code in PR #3250:
URL: https://github.com/apache/parquet-java/pull/3250#discussion_r2200285381
##########
parquet-hadoop/src/main/java/org/apache/parquet/hadoop/ParquetFileReader.java:
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@@ -1667,7 +1667,14 @@ public BloomFilter readBloomFilter(ColumnChunkMetaData
meta) throws IOException
byte[] bitset;
if (null == bloomFilterDecryptor) {
bitset = new byte[numBytes];
- in.read(bitset);
+ // For negative bloomFilterLength (files from older versions), use
readFully() instead of read().
+ // readFully() guarantees reading exactly numBytes bytes, while read()
may read fewer bytes in a single
+ // call. This ensures the entire bitset is properly loaded.
+ if (bloomFilterLength < 0) {
Review Comment:
Thanks for the clarification!
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