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https://issues.apache.org/jira/browse/DRILL-1459?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hanifi Gunes updated DRILL-1459:
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Assignee: DrillCommitter (was: Hanifi Gunes)
> Invalid field materialization causes vectors being created multiple times and
> crashes jvm in case a nested field is accessed
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: DRILL-1459
> URL: https://issues.apache.org/jira/browse/DRILL-1459
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Hanifi Gunes
> Assignee: DrillCommitter
> Attachments: DRILL-1459.1.patch.txt
>
>
> Currently RecordBatchLoader#load relies on MaterializedField#create to
> materialize a SerializedField. However, MaterializedField#create method
> disregards child fields of SerializedField so the resultant materialized
> field has only the root of the given serialized field. Instead, child fields
> are added during vectorization.
> Next time, we hit to RecordBatchLoader#load method, materialized field check
> fails because the previous materialized field now has children but newly
> materialized field does not. This misleads RecordBatchLoader#load to think
> that schema has changed and to create a new vector even though schema is the
> same.
> Additionally, running a nested query on the previously created vector
> instance crashes the jvm.
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