9ad0f6ea89
## What changes were proposed in this pull request?
SQL interface support specify `StorageLevel` when cache table. The semantic is:
```sql
CACHE TABLE tableName OPTIONS('storageLevel' 'DISK_ONLY');
```
All supported `StorageLevel` are:
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.. | ||
benchmarks | ||
compatibility/src/test/scala/org/apache/spark/sql/hive/execution | ||
src | ||
pom.xml |