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https://issues.apache.org/jira/browse/IGNITE-9?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16118120#comment-16118120
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Alexey Kuznetsov edited comment on IGNITE-9 at 8/8/17 2:24 PM:
---------------------------------------------------------------
[~yzhdanov] Currently, as it implemented at *GridCacheLockImpl* when one node
waits on condition, signal (on condition with the same name, with the same
lock) from another node cannot awake it.
Only signal from the same node works.(attached test for it).
Should we provide the same behavior for *IngniteReentrantReadWriteLock*, for
read lock and write lock ? Or, is it a bug and we should provide signal\await
shared on all cluster nodes?
Why do we need to provide name when creating condition in
org.apache.ignite.IgniteLock#getOrCreateCondition()?(As conditions from
different nodes seems not to be connected)
And the last one.
Take a look at this simple test scenario (signal from one thread must awake
thread waiting on condition) :
{code:java}
IgniteLock lock = grid(0).reentrantLock("lock", true, true, true);
final Condition[] cond = new Condition[1];
IgniteInternalFuture<Void> fut1 = GridTestUtils.runAsync(new
Callable<Void>() {
@Override public Void call() throws Exception {
lock.lock();
cond[0] = lock.newCondition();
cond[0].await();
lock.unlock();
return null;
}
});
Thread.sleep(3000);
IgniteInternalFuture<Void> fut2 = GridTestUtils.runAsync(new
Callable<Void>() {
@Override public Void call() throws Exception {
lock.lock();
cond[0].signalAll();
lock.unlock();
return null;
}
});
assertTrue(GridTestUtils.waitForCondition(new GridAbsPredicate() {
@Override public boolean apply() {
return fut1.isDone() && fut2.isDone();
}
}, 3000));
{code}
This simple scenario doesn't work. Is it a bug ?
was (Author: alexey kuznetsov):
[~yzhdanov] Currently, as it implemented at *GridCacheLockImpl* when one node
waits on condition, signal (on condition with the same name, with the same
lock) from another node cannot awake it.
Only signal from the same node works.(attached test for it).
Should we provide the same behavior for *IngniteReentrantReadWriteLock*, for
read lock and write lock ? Or, is it a bug and we should provide signal\await
shared on all cluster nodes?
Why do we need to provide name when creating condition in
org.apache.ignite.IgniteLock#getOrCreateCondition()?(As conditions from
different nodes seems not to be connected)
> Need to implement IngniteReentrantReadWriteLock
> -----------------------------------------------
>
> Key: IGNITE-9
> URL: https://issues.apache.org/jira/browse/IGNITE-9
> Project: Ignite
> Issue Type: Task
> Components: general
> Reporter: Yakov Zhdanov
> Assignee: Alexey Kuznetsov
> Attachments: IgniteReentrantReadWriteLockSelfTest.java
>
>
> See org.apache.ignite.IgniteLock for reference
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