ajantha-bhat commented on a change in pull request #3677: [wip]Fix segment
cache issue with parallel spark applications on same store
URL: https://github.com/apache/carbondata/pull/3677#discussion_r397307717
##########
File path:
core/src/main/java/org/apache/carbondata/core/indexstore/blockletindex/BlockletDataMapFactory.java
##########
@@ -369,6 +379,33 @@ private void modifyColumnSchemaForSortColumn(ColumnSchema
columnSchema, boolean
return tableBlockIndexUniqueIdentifiers;
}
+ /**
+ * This case is added for a case where, there are two applications running,
and in one application
+ * operations happened like SI rebuild, update or delete case, then the
cache should be updated as
+ * well. The cache updation happens for same application, but other
application may fail to query
+ * or may give wrong result. Since we overwrite the segment file in these
scenarios, check the
+ * timestamp, and if modified, clear from the cache.
+ */
+ private void clearSegmentMapIfSegmentUpdated(String latestSegmentFilePath,
Segment segment) {
+ SegmentBlockIndexInfo segmentBlockIndexInfo =
segmentMap.get(segment.getSegmentNo());
Review comment:
That changes done way before segment file, now no need to list index files.
you can use current changes but fill that timestamp in `SegmentRefreshInfo`. It
will take care of cache clean up part
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
With regards,
Apache Git Services
