aparna0522 commented on code in PR #4445:
URL: https://github.com/apache/cassandra/pull/4445#discussion_r2491897495
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src/java/org/apache/cassandra/journal/Journal.java:
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@@ -832,6 +832,32 @@ private void shutDown() throws InterruptedException
}
}
+ public long getDiskSpaceUsed()
+ {
+ long totalSize = 0;
+
+ try (ReferencedSegments<K, V> refs = selectAndReference(s -> true))
+ {
+ for (Segment<K, V> segment : refs.all())
+ {
+ File dataFile = segment.descriptor.fileFor(Component.DATA);
+ if (dataFile.exists())
+ totalSize += dataFile.length();
+ }
+ }
+
+ // Add current active segment
+ ActiveSegment<K, V> active = currentSegment;
Review Comment:
I believe you are correct... I traced through the code and I see that
`selectAndReference(s -> true)` already includes the active segment. When a new
active segment is created in `advanceSegment()`, it calls
`addNewActiveSegment(currentSegment = availableSegment)` which is adding the
active segment to the segments collection from
`Segments.withNewActiveSegment()` method.
Also, since I am using the predicate `s -> true`, it ensures that
activeSegment is a part of it.
Thanks for catching this!
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