aokolnychyi commented on code in PR #11825:
URL: https://github.com/apache/iceberg/pull/11825#discussion_r1906173178
##########
core/src/main/java/org/apache/iceberg/actions/SizeBasedDataRewriter.java:
##########
@@ -84,13 +86,30 @@ private boolean shouldRewrite(List<FileScanTask> group) {
return enoughInputFiles(group)
|| enoughContent(group)
|| tooMuchContent(group)
- || anyTaskHasTooManyDeletes(group);
+ || anyTaskHasTooManyDeletes(group)
+ || anyTaskHasTooHighDeleteRatio(group);
}
private boolean anyTaskHasTooManyDeletes(List<FileScanTask> group) {
return group.stream().anyMatch(this::tooManyDeletes);
}
+ private boolean anyTaskHasTooHighDeleteRatio(List<FileScanTask> group) {
+ return group.stream().anyMatch(this::tooHighDeleteRatio);
+ }
+
+ private boolean tooHighDeleteRatio(FileScanTask task) {
+ if (ContentFileUtil.containsSingleDV(task.deletes())) {
+ DeleteFile file = Iterables.getOnlyElement(task.deletes());
+ double deletedRecords = (double) Math.min(file.recordCount(),
task.file().recordCount());
+ double deleteRatio = deletedRecords / task.file().recordCount();
Review Comment:
Do we actually operate on split tasks here? I thought we were still dealing
with entire files, but I can be wrong.
--
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.
To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org
For additional commands, e-mail: issues-h...@iceberg.apache.org
