@Test @Category(NeedsRunner.class) public void testWriteSpilling() throws IOException { List<String> inputs = Lists.newArrayList(); for (int i = 0; i < 100; ++i) { inputs.add("mambo_number_" + i); } runWrite( inputs, Window.into(FixedWindows.of(Duration.millis(2))), getBaseOutputFilename(), WriteFiles.to(makeSimpleSink()) .withMaxNumWritersPerBundle(2) .withWindowedWrites() .withNumShards(1)); }