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https://issues.apache.org/jira/browse/PARQUET-2226?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17677057#comment-17677057
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ASF GitHub Bot commented on PARQUET-2226:
-----------------------------------------
yabola commented on code in PR #1020:
URL: https://github.com/apache/parquet-mr/pull/1020#discussion_r1070636680
##########
parquet-column/src/main/java/org/apache/parquet/column/values/bloomfilter/BlockSplitBloomFilter.java:
##########
@@ -398,18 +398,21 @@ public long hash(Binary value) {
@Override
public void merge(BloomFilter otherBloomFilter) throws IOException {
- Preconditions.checkArgument((otherBloomFilter.getAlgorithm() ==
getAlgorithm()),
- "BloomFilter algorithm should be same");
- Preconditions.checkArgument((otherBloomFilter.getHashStrategy() ==
getHashStrategy()),
- "BloomFilter hashStrategy should be same");
- Preconditions.checkArgument((otherBloomFilter.getBitsetSize() ==
getBitsetSize()),
- "BloomFilter bitset size should be same");
+ Preconditions.checkArgument(otherBloomFilter != null, "Cannot merge a null
BloomFilter");
+ Preconditions.checkArgument((getAlgorithm() ==
otherBloomFilter.getAlgorithm()),
Review Comment:
Thanks, done
> Support merge Bloom Filter
> --------------------------
>
> Key: PARQUET-2226
> URL: https://issues.apache.org/jira/browse/PARQUET-2226
> Project: Parquet
> Issue Type: Improvement
> Reporter: Mars
> Priority: Major
>
> We need to collect Parquet's bloom filter of multiple files, and then
> synthesize a more comprehensive bloom filter for common use.
> Guava supports similar api operations
> https://guava.dev/releases/31.0.1-jre/api/docs/src-html/com/google/common/hash/BloomFilter.html#line.252
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