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[fix](nereids)mv selection should rule out shadow index from schema change #37154

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Jul 4, 2024
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[fix](nereids)mv selection should rule out shadow index from schema change #37154

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[fix](nereids)mv selection should rule out shadow index from schema c…
starocean999 Jul 2, 2024
afb00ee
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starocean999 Jul 3, 2024
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9 changes: 9 additions & 0 deletions fe/fe-core/src/main/java/org/apache/doris/catalog/OlapTable.java
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Original file line number Diff line number Diff line change
Expand Up @@ -2990,4 +2990,13 @@ public long getRemoteDataSize() {
public long getReplicaCount() {
return statistics.getReplicaCount();
}

public boolean isShadowIndex(long indexId) {
String indexName = getIndexNameById(indexId);
if (indexName != null && indexName.startsWith(org.apache.doris.alter.SchemaChangeHandler.SHADOW_NAME_PREFIX)) {
return true;
} else {
return false;
}
}
}
5 changes: 4 additions & 1 deletion ...in/java/org/apache/doris/nereids/rules/exploration/mv/InitMaterializationContextHook.java
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Expand Up @@ -145,7 +145,10 @@ private List<SyncMaterializationContext> createSyncMvContexts(OlapTable olapTabl
keyCount += column.isKey() ? 1 : 0;
}
for (Map.Entry<String, Long> entry : olapTable.getIndexNameToId().entrySet()) {
if (entry.getValue() != baseIndexId) {
long indexId = entry.getValue();
// when doing schema change, a shadow index would be created and put together with mv indexes
// we must roll out these unexpected shadow indexes here
if (indexId != baseIndexId && !olapTable.isShadowIndex(indexId)) {
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add some comment to explain shadowIndex

MaterializedIndexMeta meta = olapTable.getIndexMetaByIndexId(entry.getValue());
String createMvSql;
if (meta.getDefineStmt() != null) {
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