leventov commented on a change in pull request #6699: release mmap immediately
after merge indexes
URL: https://github.com/apache/incubator-druid/pull/6699#discussion_r239530574
##########
File path:
server/src/main/java/org/apache/druid/segment/realtime/appenderator/AppenderatorImpl.java
##########
@@ -716,8 +717,20 @@ private DataSegment mergeAndPush(final SegmentIdentifier
identifier, final Sink
closer.register(segmentAndCloseable.rhs);
}
- mergedFile = indexMerger.mergeQueryableIndex(
- indexes,
+ File[] hydrantDirs = persistDir.listFiles(
Review comment:
`listFiles()` is an unsafe API, it may return null. Use `Files.list()`
instead. Due to this, it's also more convenient to change the new IndexMerger's
new method parameter type to `List<Path>`.
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