[SPARK-14014] [SQL] Replace existing catalog with SessionCatalog #11918
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added 30 commits
March 16, 2016 15:50
commit ad43a5f Author: Andrew Or <[email protected]> Date: Wed Mar 16 14:35:02 2016 -0700 Expand test scope + clean up test code commit 08969cd Author: Andrew Or <[email protected]> Date: Wed Mar 16 13:21:50 2016 -0700 Fix tests commit 6d9fa2f Author: Andrew Or <[email protected]> Date: Wed Mar 16 12:31:52 2016 -0700 Keep track of current database in SessionCatalog This allows us to not pass it into every single method like we used to before this commit. commit ff1c2c4 Author: Andrew Or <[email protected]> Date: Tue Mar 15 19:42:22 2016 -0700 Add TODO commit 8c84dd8 Author: Andrew Or <[email protected]> Date: Tue Mar 15 19:41:30 2016 -0700 Implement tests for functions commit 3da16fb Author: Andrew Or <[email protected]> Date: Tue Mar 15 19:04:03 2016 -0700 Implement tests for table partitions commit 7947445 Author: Andrew Or <[email protected]> Date: Tue Mar 15 18:52:30 2016 -0700 Implement tests for databases and tables commit 2f5121b Author: Andrew Or <[email protected]> Date: Tue Mar 15 16:59:38 2016 -0700 Fix infinite loop (woops) commit d3f252d Author: Andrew Or <[email protected]> Date: Tue Mar 15 16:12:55 2016 -0700 Refactor CatalogTestCases to make methods accessible commit caa4013 Author: Andrew Or <[email protected]> Date: Tue Mar 15 15:44:23 2016 -0700 Clean up duplicate code in Table/FunctionIdentifier commit 90ccdbb Author: Andrew Or <[email protected]> Date: Tue Mar 15 15:33:30 2016 -0700 Fix style commit 5587a49 Author: Andrew Or <[email protected]> Date: Tue Mar 15 15:32:38 2016 -0700 Implement SessionCatalog using ExternalCatalog commit 196f7ce Author: Andrew Or <[email protected]> Date: Tue Mar 15 14:39:22 2016 -0700 Document and clean up function methods commit 6d530a9 Author: Andrew Or <[email protected]> Date: Tue Mar 15 14:38:50 2016 -0700 Fix tests commit 2118212 Author: Andrew Or <[email protected]> Date: Tue Mar 15 14:33:20 2016 -0700 Refactor CatalogFunction to use FunctionIdentifier commit dd1fbae Author: Andrew Or <[email protected]> Date: Tue Mar 15 14:22:37 2016 -0700 Refactor CatalogTable to use TableIdentifier This is a standalone commit such that in the future we can split it out into a separate patch if preferrable. commit 39a153c Author: Andrew Or <[email protected]> Date: Tue Mar 15 13:53:42 2016 -0700 Take into account current database in table methods commit 5bf695c Author: Andrew Or <[email protected]> Date: Mon Mar 14 17:14:59 2016 -0700 Do the same for functions and partitions commit 1d12578 Author: Andrew Or <[email protected]> Date: Mon Mar 14 16:27:11 2016 -0700 Clean up table method signatures + add comments commit 98c8a3b Author: Andrew Or <[email protected]> Date: Thu Mar 10 16:35:35 2016 -0800 Merge in @yhuai's changes
We need to be able to pass in ExternalCatalog in the constructor of SQLContext and subclasses because these should be persistent across sessions. Unfortunately without significant refactoring in the HiveContext and TestHive code we cannot make this simple change happen.
This failed because SessionCatalog does not implement refreshTable. This is a bigger problem because SessionCatalog has no notion of caching tables in the first place and so it doesn't really make sense to implement refreshTable. More refactoring involving HiveMetastoreCatalog is required to make this work.
This commit deletes the trait analysis.Catalog and all of its subclasses, with one notable exception: HiveMetastoreCatalog is kept because a lot of existing functionality (like caching data source tables) are still needed. All other occurrences are now replaced with SessionCatalog. Unfortunately, because HiveMetastoreCatalog is a massive sprawl of unmaintainable code, there is no clean way to integrate it nicely with the new HiveCatalog. The path of least resistance, then, route previous usages of HiveMetastoreCatalog through HiveCatalog. This requires some whacky initialization order hacks because HMC takes in HiveContext but HiveContext takes in HiveCatalog.
The biggest change here is moving HiveMetastoreCatalog from HiveCatalog (the external one) to HiveSessionCatalog (the session specific one). This is needed because HMC depends on a lot of session specific things for, e.g. creating data source tables. This was failing tests that do things with multiple sessions, i.e. HiveQuerySuite.
There were some issues with case sensitivity analysis and error messages not being exactly as expected. The latter is now relaxed where possible.
Note: This commit ignores a test in CliSuite. There a future timed out and I investigated for like half an hour and could not figure out why. It has something to do with the way we set the current database and executing commands with "-e". This will take a little longer to debug so I prefer to do that in a separate patch.
The problem was that the metadataHive didn't get any of the spark.sql.* confs, so the barrier prefixes weren't actually set. Thanks to @yhuai for uncovering this.
The issue is that after each test we only set the current database in Hive but not the one in SessionCatalog. This means the next test will create a table in the default database (since we just pass CREATE TABLE commands to hive currently) but try to resolve it in a database left over from a previous test.
We were expecting an "OK" that never came. This test is way to specific anyway and is super brittle. It's also better to alawys set the current database through the catalog so we don't end up with mismatched current databases between Spark and Hive.
Every time we called TestHive.reset() we created a new temp directory for derby, and then we would go ahead and override the old one in the same TestHiveContext. This fails tests that use multiple sessions for some reason. Setting the same confs in metadataHive whenever we call reset() seems unnecessary, so I removed it.
This reverts commit e552558.
| @@ -554,7 +554,7 @@ def tableNames(self, dbName=None): | |||
| >>> sqlContext.registerDataFrameAsTable(df, "table1") | |||
| >>> "table1" in sqlContext.tableNames() | |||
| True | |||
| >>> "table1" in sqlContext.tableNames("db") | |||
| >>> "table1" in sqlContext.tableNames("default") | |||
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In the follow-up PR, let's have a test for a non-existent db (we should expect an error).
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test this please |
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Test build #2668 has finished for PR 11918 at commit
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Test build #53938 has finished for PR 11918 at commit
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Test build #2669 has finished for PR 11918 at commit
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Mar 28, 2016
## What changes were proposed in this pull request? This patch addresses the remaining comments left in apache#11750 and apache#11918 after they are merged. For a full list of changes in this patch, just trace the commits. ## How was this patch tested? `SessionCatalogSuite` and `CatalogTestCases` Author: Andrew Or <[email protected]> Closes apache#12006 from andrewor14/session-catalog-followup.
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What changes were proposed in this pull request?
SessionCatalog, introduced in #11750, is a catalog that keeps track of temporary functions and tables, and delegates metastore operations to ExternalCatalog. This functionality overlaps a lot with the existing analysis.Catalog.
As of this commit, SessionCatalog and ExternalCatalog will no longer be dead code. There are still things that need to be done after this patch, namely:
How was this patch tested?
This is largely a refactoring task so there are no new tests introduced. The particularly relevant tests are SessionCatalogSuite and ExternalCatalogSuite.
NOTE: This one has an extra commit on top of #11836 for fixing python tests.