jihoonson commented on a change in pull request #6676: Handoff should ignore
segments that are dropped by drop rules
URL: https://github.com/apache/incubator-druid/pull/6676#discussion_r244858477
##########
File path:
server/src/main/java/org/apache/druid/server/http/DatasourcesResource.java
##########
@@ -647,4 +655,80 @@ public Response getSegmentDataSourceSpecificInterval(
);
return Response.ok(retval).build();
}
+
+ @GET
+ @Path("/{dataSourceName}/handoffComplete")
+ @Produces(MediaType.APPLICATION_JSON)
+ @ResourceFilters(DatasourceResourceFilter.class)
+ public Response isHandOffComplete(
+ @PathParam("dataSourceName") String dataSourceName,
+ @QueryParam("interval") final String interval,
+ @QueryParam("partitionNumber") final int partitionNumber,
+ @QueryParam("version") final String version
+ )
+ {
+ try {
+ final List<Rule> rules =
databaseRuleManager.getRulesWithDefault(dataSourceName);
+ final Interval theInterval = Intervals.of(interval);
+ final SegmentDescriptor descriptor = new SegmentDescriptor(theInterval,
version, partitionNumber);
+ final DateTime now = DateTimes.nowUtc();
+ // dropped means a segment will never be handed off, i.e it completed
hand off
+ // init to true, reset to false only if this segment can be loaded by
rules
+ boolean dropped = true;
+ for (Rule rule : rules) {
+ if (rule.appliesTo(theInterval, now)) {
+ if (rule instanceof LoadRule) {
+ dropped = false;
+ }
+ break;
+ }
+ }
+ if (dropped) {
+ return Response.ok(true).build();
+ }
+
+ TimelineLookup<String, SegmentLoadInfo> timeline =
serverInventoryView.getTimeline(
+ new TableDataSource(dataSourceName)
+ );
+ if (timeline == null) {
+ log.debug("No timeline found for datasource[%s]", dataSourceName);
+ return Response.ok(false).build();
+ }
+
+ Iterable<TimelineObjectHolder<String, SegmentLoadInfo>> lookup =
timeline.lookupWithIncompletePartitions(
+ theInterval);
+ FunctionalIterable<ImmutableSegmentLoadInfo> loadInfoIterable =
FunctionalIterable
+ .create(lookup).transformCat(
+ (TimelineObjectHolder<String, SegmentLoadInfo> input) ->
+ Iterables.transform(
+ input.getObject(),
+ (PartitionChunk<SegmentLoadInfo> chunk) ->
+ chunk.getObject().toImmutableSegmentLoadInfo()
+ )
+ );
+ if (isSegmentLoaded(loadInfoIterable, descriptor)) {
+ return Response.ok(true).build();
+ }
+
+ return Response.ok(false).build();
+ }
+ catch (Exception e) {
+ return Response.serverError().entity(ImmutableMap.of("error",
e.toString())).build();
Review comment:
Probably logging the full stack trace of exception would help as well?
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