Paul Rogers created DRILL-5255:
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Summary: Drill requires that dfs.tmp be set up a start time, even
if CTTAS not used
Key: DRILL-5255
URL: https://issues.apache.org/jira/browse/DRILL-5255
Project: Apache Drill
Issue Type: Bug
Affects Versions: 1.10
Reporter: Paul Rogers
Assignee: Arina Ielchiieva
Fix For: 1.10
Drill can operate in embedded mode. In this mode, no storage plugin definitions
other than the defaults may be present. In particular, when using the Drill
test framework, only those storage plugins defined in the Drill code are
available.
Yet, Drill checks for the existence of the dfs.tmp plugin definition (as named
by the {{drill.exec.default_temporary_workspace}} parameter. Because this
plugin is not defined, an exception occurs:
{code}
org.apache.drill.common.exceptions.UserException: PARSE ERROR: Unable to create
or drop tables/views. Schema [dfs.tmp] is immutable.
[Error Id: 792d4e5d-3f31-4f38-8bb4-d108f1a808f6 ]
at
org.apache.drill.common.exceptions.UserException$Builder.build(UserException.java:544)
at
org.apache.drill.exec.planner.sql.SchemaUtilites.resolveToMutableDrillSchema(SchemaUtilites.java:184)
at
org.apache.drill.exec.planner.sql.SchemaUtilites.getTemporaryWorkspace(SchemaUtilites.java:201)
at
org.apache.drill.exec.server.Drillbit.validateTemporaryWorkspace(Drillbit.java:264)
at org.apache.drill.exec.server.Drillbit.run(Drillbit.java:135)
at
org.apache.drill.test.ClusterFixture.startDrillbits(ClusterFixture.java:207)
...
{code}
Expected that either a configuration would exist that would use the default
/tmp/drill location, or that the check for {{drill.tmp}} would be deferred
until it is actually required (such as when executing a CTTAS statement.)
As it is, the test framework must be altered to work around this problem by
defining the necessary properties. But, users of the embedded Drillbit may not
know to do this configuration.
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