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https://issues.apache.org/jira/browse/IMPALA-9175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on IMPALA-9175 started by Norbert Luksa.
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> Revisit the error handling logics in ORC scanner
> ------------------------------------------------
>
> Key: IMPALA-9175
> URL: https://issues.apache.org/jira/browse/IMPALA-9175
> Project: IMPALA
> Issue Type: Task
> Reporter: Quanlong Huang
> Assignee: Norbert Luksa
> Priority: Blocker
>
> This is a task to revisit all the corresponding error handling logics in the
> ORC scanner comparing to the Parquet scanner. For each kind of error handling
> in the parquet scanner, make sure we already handle it in the orc scanner,
> otherwise create separate JIRAs to handle them.
> Also need to make sure whether the exposed error messages are enough for
> debugging. For instance, one frequently encountered error when Impala has
> stale metadata of an ORC file is:
> {code:java}
> Encountered parse error in tail of ORC file
> hdfs://hadoop2cluster/user/hive-0.13.1/warehouse/bi_ucar.db/alliance_driver_stat_hour_api/dt=2019-08-09/part-00006:
> Invalid ORC postscript length
> {code}
> It'd be better to also print the postscript length we read and the file size.
> So users can know whether the file is corrupt (so need data regeneration) or
> the metadata is stale (so need refresh). We may need changes in the ORC lib
> for these.
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