public QueryableIndex buildMMappedMergedIndex() {
Preconditions.checkNotNull(indexMerger, "indexMerger");
Preconditions.checkNotNull(tmpDir, "tmpDir");
final List<QueryableIndex> persisted = Lists.newArrayList();
try {
for (int i = 0; i < rows.size(); i += ROWS_PER_INDEX_FOR_MERGING) {
persisted.add(
TestHelper.getTestIndexIO()
.loadIndex(
indexMerger.persist(
buildIncrementalIndexWithRows(
schema,
maxRows,
rows.subList(i, Math.min(rows.size(), i + ROWS_PER_INDEX_FOR_MERGING))),
new File(
tmpDir, String.format("testIndex-%s", UUID.randomUUID().toString())),
indexSpec)));
}
final QueryableIndex merged =
TestHelper.getTestIndexIO()
.loadIndex(
indexMerger.merge(
Lists.transform(
persisted,
new Function<QueryableIndex, IndexableAdapter>() {
@Override
public IndexableAdapter apply(QueryableIndex input) {
return new QueryableIndexIndexableAdapter(input);
}
}),
true,
Iterables.toArray(
Iterables.transform(
Arrays.asList(schema.getMetrics()),
new Function<AggregatorFactory, AggregatorFactory>() {
@Override
public AggregatorFactory apply(AggregatorFactory input) {
return input.getCombiningFactory();
}
}),
AggregatorFactory.class),
new File(tmpDir, String.format("testIndex-%s", UUID.randomUUID())),
indexSpec));
for (QueryableIndex index : persisted) {
index.close();
}
return merged;
} catch (IOException e) {
throw Throwables.propagate(e);
}
}
@Override
public void close() throws IOException {
// this is kinda nasty
index.close();
}