adesh-rao commented on a change in pull request #1109:
URL: https://github.com/apache/hive/pull/1109#discussion_r449387162
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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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@@ -543,10 +557,30 @@ static void prewarm(RawStore rawStore) {
tableColStats = rawStore.getTableColumnStatistics(catName,
dbName, tblName, colNames, CacheUtils.HIVE_ENGINE);
Deadline.stopTimer();
}
+ Deadline.startTimer("getPrimaryKeys");
+ primaryKeys = rawStore.getPrimaryKeys(catName, dbName, tblName);
+ Deadline.stopTimer();
+ cacheObjects.setPrimaryKeys(primaryKeys);
+
+ Deadline.startTimer("getForeignKeys");
+ foreignKeys = rawStore.getForeignKeys(catName, null, null,
dbName, tblName);
Review comment:
Then should we store foreign key mappings against parentDb and table for
quick access (otherwise we will be scanning all the db/tables in cache)?
And this also means we will be keeping two copies, one with parent table and
another with foreign table.
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