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https://issues.apache.org/jira/browse/PHOENIX-5027?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Geoffrey Jacoby reassigned PHOENIX-5027:
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Assignee: Kadir OZDEMIR (was: Geoffrey Jacoby)
> PhoenixIndexImportDirectMapper retried mappers can succeed without inserting
> all index data
> -------------------------------------------------------------------------------------------
>
> Key: PHOENIX-5027
> URL: https://issues.apache.org/jira/browse/PHOENIX-5027
> Project: Phoenix
> Issue Type: Bug
> Reporter: Geoffrey Jacoby
> Assignee: Kadir OZDEMIR
> Priority: Major
>
> On two recent occasions I've rebuilt a large global immutable index by doing
> a DROP/CREATE and ended up with missing index data, though it doesn't happen
> every time. Here's what happened:
> 1. PhoenixMRJobSubmitter correctly detects the index rebuild is necessary,
> and invokes IndexTool.
> 2. IndexTool enqueues a MapReduce job using PhoenixIndexImportDirectMapper
> 3. Some mappers fail because of timeouts due to heavy splitting on the new
> index table
> 4. Those mappers are retried and succeed. The MR job as a whole completes
> successfully.
> 5. RowCounter and IndexScrutinyTool show millions of rows are missing from
> the index, with keys that imply they were part of the failed mappers
> Aside from the timestamp glitch I pointed out in PHOEIX-5018, the code in
> PhoenixIndexImportDirectMapper _looks_ idempotent on a rerun, so I've been
> struggling to find the cause of the missing index data.
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