adesh-rao commented on a change in pull request #1109:
URL: https://github.com/apache/hive/pull/1109#discussion_r446900743
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File path:
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/cache/CachedStore.java
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@@ -2497,26 +2599,82 @@ long getPartsFound() {
@Override public List<SQLPrimaryKey> getPrimaryKeys(String catName, String
dbName, String tblName)
throws MetaException {
- // TODO constraintCache
- return rawStore.getPrimaryKeys(catName, dbName, tblName);
+ catName = normalizeIdentifier(catName);
+ dbName = StringUtils.normalizeIdentifier(dbName);
+ tblName = StringUtils.normalizeIdentifier(tblName);
+ if (!shouldCacheTable(catName, dbName, tblName) || (canUseEvents &&
rawStore.isActiveTransaction())) {
+ return rawStore.getPrimaryKeys(catName, dbName, tblName);
+ }
+
+ Table tbl = sharedCache.getTableFromCache(catName, dbName, tblName);
+ if (tbl == null) {
+ // The table containing the primary keys is not yet loaded in cache
+ return rawStore.getPrimaryKeys(catName, dbName, tblName);
+ }
+ List<SQLPrimaryKey> keys = sharedCache.listCachedPrimaryKeys(catName,
dbName, tblName);
Review comment:
Yes, While updating the cache, there is a possibility that table got
updated but constraints didn't (they are yet to be updated). But this is
similar to partition/columnStats caching.
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