{"push_id":1343911904,"size":1,"distinct_size":1,"ref":"refs/heads/master","head":"b9a147181d5e38d9abed0c7215f4c5cb695f579c","before":"5b77e66dd6a128c5992ab3bde418613f84be7009","commits":[{"sha":"b9a147181d5e38d9abed0c7215f4c5cb695f579c","author":{"name":"Wenchen Fan","email":"51df79715bab6f96b68cf2b8813ef1aaa5547bdb@databricks.com"},"message":"[SPARK-17720][SQL] introduce static SQL conf\n\n## What changes were proposed in this pull request?\n\nSQLConf is session-scoped and mutable. However, we do have the requirement for a static SQL conf, which is global and immutable, e.g. the `schemaStringThreshold` in `HiveExternalCatalog`, the flag to enable/disable hive support, the global temp view database in https://github.com/apache/spark/pull/14897.\n\nActually we've already implemented static SQL conf implicitly via `SparkConf`, this PR just make it explicit and expose it to users, so that they can see the config value via SQL command or `SparkSession.conf`, and forbid users to set/unset static SQL conf.\n\n## How was this patch tested?\n\nnew tests in SQLConfSuite\n\nAuthor: Wenchen Fan <wenchen@databricks.com>\n\nCloses #15295 from cloud-fan/global-conf.","distinct":true,"url":"https://api.github.com/repos/dbtsai/spark/commits/b9a147181d5e38d9abed0c7215f4c5cb695f579c"}]}
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