Github user gatorsmile commented on the issue:
https://github.com/apache/spark/pull/14363
@lianhuiwang Parquet is a little bit different here. We are converting it
to data source tables when inserting rows into Parquet. To get the expected
results, you just need to set
Github user cloud-fan commented on the issue:
https://github.com/apache/spark/pull/14363
Well, Spark SQL is not announced to be fully compatible with hive, I think
it's reasonable to have some issues. cc @rxin @yhuai should we fix this?
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Github user lianhuiwang commented on the issue:
https://github.com/apache/spark/pull/14363
@cloud-fan There is a case that i met. The varchar(length)/char(length)
type is not a String Type. But now SparkSQL consider them a string type. So
there are different result with the
Github user gatorsmile commented on the issue:
https://github.com/apache/spark/pull/14363
Your concern is valid. We are missing the test cases for verifying these
scenarios.
I saw a discussion in a wechat group about the issue in integration between
Hive and Spark. They are
Github user cloud-fan commented on the issue:
https://github.com/apache/spark/pull/14363
Oh sorry I misread our parser rules. `varchar(length)` is supported but the
`length` is ignored. I checked with hive again, looks like the only unsupported
data type is `UNIONTYPE`
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Github user gatorsmile commented on the issue:
https://github.com/apache/spark/pull/14363
```SCALA
TestHive.sessionState.metadataHive.runSqlHive("CREATE TABLE test (id
varchar(50))")
TestHive.sessionState.metadataHive.runSqlHive("INSERT INTO TABLE test
VALUES ('4')")
Github user cloud-fan commented on the issue:
https://github.com/apache/spark/pull/14363
for a hive table(created by hive) with `varchar(length)` column, we can
describe it but can't read data from it before this PR. Now we can't describe
it. Do you think we should fix it? BTW there
Github user yhuai commented on the issue:
https://github.com/apache/spark/pull/14363
Thanks. But, what are specific cases are not supported? If there is any
case, we should make change to support that, right?
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Github user cloud-fan commented on the issue:
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> Do we know which hive type strings cannot be parsed by spark?
`varchar(length)` and `char(length)`. see
https://github.com/apache/spark/pull/14363#discussion_r72735867 for what we
Github user yhuai commented on the issue:
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LGTM. Thanks. Merging to master.
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Github user yhuai commented on the issue:
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Do we know which hive type strings cannot be parsed by spark?
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cc @yhuai @liancheng
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