[
https://issues.apache.org/jira/browse/PHOENIX-7002?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Viraj Jasani resolved PHOENIX-7002.
-----------------------------------
Assignee: Divneet Kaur (was: Rushabh Shah)
Resolution: Fixed
> Insufficient logging in phoenix client when server throws
> StaleRegionBoundaryCacheException.
> --------------------------------------------------------------------------------------------
>
> Key: PHOENIX-7002
> URL: https://issues.apache.org/jira/browse/PHOENIX-7002
> Project: Phoenix
> Issue Type: Bug
> Reporter: Rushabh Shah
> Assignee: Divneet Kaur
> Priority: Major
> Fix For: 5.2.0, 5.1.4
>
>
> Saw an incident in production cluster where a phoenix range scan query
> returned result outside of the range provided by the customer. There were
> hbck repair runs going on while the query was running. During the start of
> the query, there were region holes in the table (no way to confirm) and while
> the query was still running we ran hbck repair operation and that caused
> region overlaps (This is confirmed since overlap continued after the query).
> But the sad part is there were absolutely no exceptions/errors/stack trace on
> the client or server side.
> After the query is run we log the execution time, number of exception
> encountered as a log line. There we see this query encountered
> [StaleRegionBoundaryCacheException|https://github.com/apache/phoenix/blob/4.16/phoenix-core/src/main/java/org/apache/phoenix/monitoring/MetricType.java#L57]
> 4 times.
> There is some logic in BaseResultIterators where we adjust the start and end
> key range for the scan. See
> [here|https://github.com/apache/phoenix/blob/4.16/phoenix-core/src/main/java/org/apache/phoenix/iterate/BaseResultIterators.java#L688-L730]
> Without knowing the state of meta known or exception encountered, it is very
> difficult to debug why this happened.
> At the very least, we would want to log all the exceptions on the phoenix
> client side.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
