[jira] [Created] (IMPALA-5799) INSERTs into Kudu can crash if a column is dropped concurrently

["Thomas Tauber-Marshall (JIRA)" <ji...@apache.org>]

Thomas Tauber-Marshall created IMPALA-5799:
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             Summary: INSERTs into Kudu can crash if a column is dropped concurrently
                 Key: IMPALA-5799
                 URL: https://issues.apache.org/jira/browse/IMPALA-5799
             Project: IMPALA
          Issue Type: Bug
          Components: Backend
    Affects Versions: Impala 2.10.0
            Reporter: Thomas Tauber-Marshall
            Priority: Critical


When inserting into a Kudu table, we check that the table schema matches the values to insert during planning. Once the KuduTableSink opens the KuduTable object, we're guaranteed that the KuduTable's schema won't change.

However, there's a window of vulnerability between the checks in the FE and opening the table in the BE where the schema could change. The only change that we allow that is incompatible is dropping a column, which can cause Impala to crash.



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