[ARTEMIS-1570] SharedNothingBackup does not replicate all journal from live

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.4.0
• Fix Version/s: 2.5.0
• Component/s: Broker

Environment

i'm running unit test on windows.

• Assignee: Unassigned
• Reporter: shoukun huai
• Created: 21/Dec/17 06:31
• Updated: 25/Jan/18 02:22
• Resolved: 22/Jan/18 17:30

Description

I try to test replication when live is in heavy IO load.
Attached is my junit test.
The test use a slow message persister to simulate live is busy on IO, so JournalImpl's `appendExecutor` is busy.

After start live server, send 5 messages each with a property `delay` of 5000 ms, then start the backup server, wait until it is replicated. Then send more messages without delay.

Stop live and backup after all message sent, then check message journal.

Backup will miss 2 message/journal entry.

Issue Links

• is duplicated by: ARTEMIS-1620 Replication catchup may get behind under high load
• links to: GitHub Pull Request #1742