adarshsanjeev commented on code in PR #15162:
URL: https://github.com/apache/druid/pull/15162#discussion_r1363217932
##########
extensions-core/datasketches/src/main/java/org/apache/druid/query/aggregation/datasketches/hll/HllSketchHolderObjectStrategy.java:
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@@ -48,12 +49,18 @@ public int compare(final HllSketchHolder sketch1, final
HllSketchHolder sketch2)
@Override
public HllSketchHolder fromByteBuffer(final ByteBuffer buf, final int size)
{
+ if (size == 0 || isSafeToConvertToNullSketch(buf)) {
Review Comment:
Added a check on size inside the method wherever necessary
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