clebertsuconic commented on code in PR #5498:
URL: https://github.com/apache/activemq-artemis/pull/5498#discussion_r1960360170
##########
artemis-server/src/main/java/org/apache/activemq/artemis/core/paging/impl/PagingStoreImpl.java:
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@@ -1262,8 +1324,16 @@ private boolean writePage(Message message,
Transaction tx,
RouteContextList listCtx,
Function<Message, Message> pageDecorator) throws
Exception {
- lock.writeLock().lock();
-
+ if (timedWriter == null) {
+ // in case timedWriter is not being used, we need to guarantee a
writeLock.
+ // because there's no way to upgrade from reading to writeLock
+ writeLock();
+ } else {
+ // if we are using a timedWritter, we can just use a readLock to
guarantee paging is not changed
+ // this will issue the writer on a different thread, and we can just
use a readLock
+ readLock();
Review Comment:
thing is... when the pagedTimeWriter is in use, things are pretty much
single threaded.. and updated from the PageExecutor. The only difference is to
schedule a task it needs to use a readLock to make sure it was paging, and it
should stay paging until the task is scheduled.
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