James Taylor created PHOENIX-1520:
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Summary: Provide a means of tracking progress of secondary index
population
Key: PHOENIX-1520
URL: https://issues.apache.org/jira/browse/PHOENIX-1520
Project: Phoenix
Issue Type: Bug
Reporter: James Taylor
When an index is created against a table that already has a substantial amount
of data, the initial population of the index can take a long time. We should
provide a means of monitoring the percentage complete of the task.
It's possible that this could be done in a way that is general enough to apply
to any Phoenix query. The secondary index population is done through an UPSERT
SELECT statement that selects from the data table and upserts into the index
table. We have table stats up front that tell us how many guidepost chunks will
be iterated over. We could monitor the thread pool based on the tasks queued in
the pool by ParallelIterators to get an idea of total number of remaining tasks.
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