flyrain commented on a change in pull request #3287:
URL: https://github.com/apache/iceberg/pull/3287#discussion_r737820996
##########
File path:
spark/v3.2/spark/src/jmh/java/org/apache/iceberg/spark/source/IcebergSourceBenchmark.java
##########
@@ -187,4 +202,45 @@ protected void withTableProperties(Map<String, String>
props, Action action) {
restoreProperties.commit();
}
}
+
+ protected void writePosDeletes(CharSequence path, long numRows, double
percentage) throws IOException {
+ OutputFileFactory fileFactory = newFileFactory();
+ SparkFileWriterFactory writerFactory =
SparkFileWriterFactory.builderFor(table())
+ .dataFileFormat(fileFormat())
+ .build();
+
+ ClusteredPositionDeleteWriter<InternalRow> writer = new
ClusteredPositionDeleteWriter<>(
+ writerFactory, fileFactory, table().io(),
+ fileFormat(), TARGET_FILE_SIZE_IN_BYTES);
+
+ PartitionSpec unpartitionedSpec = table().specs().get(0);
+ Set<Long> deletedPos = Sets.newHashSet();
+ while (deletedPos.size() < numRows * percentage) {
+ deletedPos.add(ThreadLocalRandom.current().nextLong(numRows));
Review comment:
It doesn't return a negative.
https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ThreadLocalRandom.html
> nextLong(long bound)Returns a pseudorandom long value between zero
(inclusive) and the specified bound (exclusive).
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