Rohit Yadav b54d19b3b9
server: fix TransactionLegacy DB connection leaks due to DB switching by B&R thread (#4121)
BackupSync task would switch between databases to update backup usage
metrics in the cloud_usage.usage_backup table. The current framework
and the usage in ManagedContext causes database connection
(LegacyTransaction) leaks. When the thread runs faster, the issue is
easily reproducible and checking via heap dump analysis or using JMX
MBeans. This fixes by moving the task of backup data updation for
usage data to the usage server by publishing usage events instead of
switching between databases in a local thread while in a
ManagedContextRunnable.

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
2020-06-16 13:30:31 +05:30
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