morningman commented on a change in pull request #2781: Batch Operate Rollup
table in Doris #2671
URL: https://github.com/apache/incubator-doris/pull/2781#discussion_r376709508
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File path: fe/src/main/java/org/apache/doris/alter/MaterializedViewHandler.java
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@@ -507,6 +608,12 @@ private long checkAndGetBaseIndex(String baseIndexName,
OlapTable olapTable) thr
return baseIndexId;
}
+ public void processBatchDropRollup (List<AlterClause> dropRollupClauses,
Database db, OlapTable olapTable) throws DdlException {
+ for (AlterClause dropRollupClause : dropRollupClauses) {
+ processDropRollup((DropRollupClause)dropRollupClause, db,
olapTable);
Review comment:
"batch drop rollup" operation should still be atomic when writing meta log.
So you need to modify the `processDropRollup()`:
1. First, traverse all drop clauses to validate them, such as whether to
drop the base index, does the rollup index need to be dropped exist.
2. Do the real drop operation. And all-or-non rollups should be dropped.
3. Write a edit log named `BatchDropRollupOperationLog` to persist the meta.
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