shubhamvishu commented on code in PR #12798:
URL: https://github.com/apache/lucene/pull/12798#discussion_r1390277613
##########
lucene/core/src/java/org/apache/lucene/util/hnsw/HnswConcurrentMergeBuilder.java:
##########
@@ -77,42 +75,21 @@ public OnHeapHnswGraph build(int maxOrd) throws IOException
{
HNSW_COMPONENT,
"build graph from " + maxOrd + " vectors, with " + workers.length +
" workers");
}
- List<Future<?>> futures = new ArrayList<>();
+ List<Future<Void>> futures = new ArrayList<>();
for (int i = 0; i < workers.length; i++) {
int finalI = i;
futures.add(
exec.submit(
() -> {
try {
workers[finalI].run(maxOrd);
+ return null;
} catch (IOException e) {
throw new RuntimeException(e);
}
}));
}
Review Comment:
Should we instead use the `TaskExecutor` here to run the tasks
concurrently?. But since the `TaskExecutor` cx is currently pkg-private we
would need to make it public to use here. It makes sense to me to do so since
we are making use of concurrency/executors in indexing etc also(eg: hnsw) and
not just at search time.
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