SourabhBadhya commented on code in PR #4748:
URL: https://github.com/apache/hive/pull/4748#discussion_r1350426717
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ql/src/java/org/apache/hadoop/hive/ql/parse/UpdateDeleteSemanticAnalyzer.java:
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@@ -287,6 +299,29 @@ private void reparseAndSuperAnalyze(ASTNode tree, Table
mTable, ASTNode tabNameN
}
}
+ private void checkAndPerformStorageMetadataUpdate(Table table,
HiveStorageHandler storageHandler) {
+ if (!deleting() || storageHandler == null) {
+ return;
+ }
+ Map<String, TableScanOperator> topOps = getParseContext().getTopOps();
+ if (!topOps.containsKey(table.getTableName())) {
+ return;
+ }
+ ExprNodeGenericFuncDesc hiveFilter = getParseContext().getTopOps()
+ .get(table.getTableName()).getConf().getFilterExpr();
+ if (hiveFilter == null ||
!ConvertAstToSearchArg.isCompleteConversion(ctx.getConf(), hiveFilter)) {
Review Comment:
Yes `isCompleteConversion` means that every leaf node of the hive filter can
be converted to a leaf entity in SearchArgument. This ensures that deletes
happen the right way and we dont delete anything using partial filters.
Actually, `hasResiduals` doesn't make sense since the search argument does not
have complete filter but has partial filters if every leaf node cannot be
converted to its leaf entity.
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