danny0405 commented on code in PR #13365:
URL: https://github.com/apache/hudi/pull/13365#discussion_r2111559799
##########
hudi-common/src/main/java/org/apache/hudi/common/bloom/HoodieDynamicBoundedBloomFilter.java:
##########
@@ -125,5 +126,42 @@ private void
extractAndSetInternalBloomFilter(DataInputStream dis) throws IOExce
internalDynamicBloomFilter = new InternalDynamicBloomFilter();
internalDynamicBloomFilter.readFields(dis);
}
+
+ @Override
+ public void or(BloomFilter other) {
+ if (other != null) {
+ ValidationUtils.checkArgument(other instanceof
HoodieDynamicBoundedBloomFilter,
+ "HoodieDynamicBoundedBloomFilter can only perform OR operations with
other HoodieDynamicBoundedBloomFilter.");
+ HoodieDynamicBoundedBloomFilter otherFilter =
(HoodieDynamicBoundedBloomFilter) other;
+ int sourceMatrixLength = this.getMatrixLength();
+ int targetMatrixLength = otherFilter.getMatrixLength();
+ if (targetMatrixLength > sourceMatrixLength) {
+ this.rescaleFromTarget(targetMatrixLength);
+ } else {
+ otherFilter.rescaleFromTarget(sourceMatrixLength);
+ }
+
this.internalDynamicBloomFilter.or(otherFilter.internalDynamicBloomFilter);
+ }
+ }
+
+ /**
+ * rescale the internal dynamic bloom filter by length
+ * @param targetMatrixLength
+ * @return
+ */
+ private HoodieDynamicBoundedBloomFilter rescaleFromTarget(int
targetMatrixLength) {
+ int initMatrixLength = this.internalDynamicBloomFilter.getMatrixLength();
+ int needAddRowNum = targetMatrixLength - initMatrixLength;
+ if (needAddRowNum > 0) {
+ for (int i = 0; i < needAddRowNum; i++) {
+ this.internalDynamicBloomFilter.addRow();
Review Comment:
Not sure if we can rebuild the filter in one shot instead of invoking the
`addRow` multiple times?
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