Csaba Ringhofer created IMPALA-9753:
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Summary: Possible bug in TRUNCATE of ACID tables on S3
Key: IMPALA-9753
URL: https://issues.apache.org/jira/browse/IMPALA-9753
Project: IMPALA
Issue Type: Bug
Components: Frontend
Reporter: Csaba Ringhofer
TRUNCATE TABLE doesn't seem to work on ACID tables in an S3 environment (with
S3 guard)
I couldn't reproduce it yet in Impala dev env, and I am not completely sure
that the cause is actually S3, but found an operation that could possibly go
wrong on S3:
https://github.com/apache/impala/blob/master/fe/src/main/java/org/apache/impala/service/CatalogOpExecutor.java#L2115
Simply calling Create(Path) does create the file in HDFS, but I think that it
is only created on S3 when the returned stream is closed.
All related tests are skipped if the environment is S3, so it seems possible
that the bug could slip through Impala's component tests.
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