Houston Putman created SOLR-17650:
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Summary: Determine executor for UpdateLog reading
Key: SOLR-17650
URL: https://issues.apache.org/jira/browse/SOLR-17650
Project: Solr
Issue Type: Improvement
Reporter: Houston Putman
Currently most operations that read from the updateLog use the OrderedExecutor
that is setup for that purpose. However, TLOG replicas, when taking leadership,
read from the updateLog without the executor (using the inSortedOrder = true
parameter).
SOLR-17391 changed the default executor for updateLog reading to use a fixed
coreSize thread pool, which seems like started to enable parallel reading of
the updateLog (which was supposed to be true beforehand, but it looks like our
understanding of the executor was wrong).
This ticket's purpose is to:
# Investigate the correct way of reading the updateLog using an executor
# Determine if there needs to actually be multiple ways
(inSortedOrder=true/false)
# Make sure the tests pass with whatever we decide.
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