private CompletableFuture<Void> internalDeleteSnapshot(SnapshotDescription snapshot) {
    return this.<Void> newMasterCaller()
      .action((controller, stub) -> this.<DeleteSnapshotRequest, DeleteSnapshotResponse, Void> call(
        controller, stub,
        DeleteSnapshotRequest.newBuilder()
          .setSnapshot(ProtobufUtil.createHBaseProtosSnapshotDesc(snapshot)).build(),
        (s, c, req, done) -> s.deleteSnapshot(c, req, done), resp -> null))
      .call();
  }
Compact the region at specific region server.
hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncHBaseAdmin.java