public static MMappedIndex mergedRealtimeIndex() {
synchronized (log) {
if (mergedRealtime != null) {
return mergedRealtime;
}
try {
IncrementalIndex top = makeRealtimeIndex("druid.sample.tsv.top");
IncrementalIndex bottom = makeRealtimeIndex("druid.sample.tsv.bottom");
File tmpFile = File.createTempFile("yay", "who");
tmpFile.delete();
File topFile = new File(tmpFile, "top");
File bottomFile = new File(tmpFile, "bottom");
File mergedFile = new File(tmpFile, "merged");
topFile.mkdirs();
topFile.deleteOnExit();
bottomFile.mkdirs();
bottomFile.deleteOnExit();
mergedFile.mkdirs();
mergedFile.deleteOnExit();
IndexMerger.persist(top, DATA_INTERVAL, topFile);
IndexMerger.persist(bottom, DATA_INTERVAL, bottomFile);
mergedRealtime =
com.metamx.druid.index.v1.IndexIO.mapDir(
IndexMerger.mergeMMapped(
Arrays.asList(
com.metamx.druid.index.v1.IndexIO.mapDir(topFile),
com.metamx.druid.index.v1.IndexIO.mapDir(bottomFile)),
METRIC_AGGS,
mergedFile));
return mergedRealtime;
} catch (IOException e) {
throw Throwables.propagate(e);
}
}
}
public static MMappedIndex persistRealtimeAndLoadMMapped(IncrementalIndex index) {
try {
File someTmpFile = File.createTempFile("billy", "yay");
someTmpFile.delete();
someTmpFile.mkdirs();
someTmpFile.deleteOnExit();
IndexMerger.persist(index, someTmpFile);
return com.metamx.druid.index.v1.IndexIO.mapDir(someTmpFile);
} catch (IOException e) {
throw Throwables.propagate(e);
}
}