Agree, the cache is transactional, however, the second transaction does not
see the dirty value:
Ignite ignite0 = ignite(0);
IgniteTransactions transactions = ignite0.transactions();
final IgniteCache<String, String> cache =
ignite0.getOrCreateCache("testCache");
final Object monitor = new Object();
GridTestUtils.runAsync(new Callable<Object>() {
@Override
public Object call() throws Exception {
synchronized (monitor){
doInTransaction(ignite(1), new Callable<Object>() {
@Override
public Object call() throws Exception {
cache.put("key1", "val1");
monitor.wait();
System.out.println("continue first transaction");
return null;
}
});
}
return null;
}
});
Transaction tx =
transactions.txStart(TransactionConcurrency.OPTIMISTIC,
TransactionIsolation.READ_COMMITTED);
assertNull(cache.get("key1")); // <- This check passes
tx.commit();
2017-03-30 13:30 GMT+03:00 ALEKSEY KUZNETSOV <alkuznetsov...@gmail.com>:
> Well, i changed code , added :
>
> CacheConfiguration config = cache.getConfiguration(
> CacheConfiguration.class);
> System.out.println(config.getAtomicityMode());//TRANSACTIONAL
>
> So, atomicity is transactional
>
> чт, 30 мар. 2017 г. в 12:43, Alexey Goncharuk <alexey.goncha...@gmail.com
> >:
>
> > Aleksey,
> >
> > It looks like in your test the result of method atomicityMode() is not
> used
> > because you do getOrCreateCache() without the configuration argument,
> which
> > will create a cache with a default configuration, which is ATOMIC.
> >
> > 2017-03-30 12:06 GMT+03:00 ALEKSEY KUZNETSOV <alkuznetsov...@gmail.com>:
> >
> > > public class FooTest extends GridCacheAbstractSelfTest {
> > >
> > > @Override
> > > protected void afterTestsStopped() throws Exception {
> > > super.afterTestsStopped();
> > > stopAllGrids();
> > > }
> > >
> > > @Override
> > > protected int gridCount() {
> > > return 3;
> > > }
> > >
> > > @Override
> > > protected CacheMode cacheMode() {
> > > return CacheMode.PARTITIONED;
> > > }
> > >
> > > @Override
> > > protected CacheAtomicityMode atomicityMode() {
> > > return CacheAtomicityMode.TRANSACTIONAL;
> > > }
> > >
> > > public void testLoggingTransactions() throws InterruptedException {
> > > Ignite ignite0 = ignite(0);
> > > IgniteTransactions transactions = ignite0.transactions();
> > > IgniteCache<String, String> cache =
> > > ignite0.getOrCreateCache("testCache");
> > > Object monitor = new Object();
> > >
> > > GridTestUtils.runAsync(new Callable<Object>() {
> > > @Override
> > > public Object call() throws Exception {
> > > synchronized (monitor){
> > > doInTransaction(ignite(1), new Callable<Object>() {
> > > @Override
> > > public Object call() throws Exception {
> > > cache.put("key1", "val1");
> > > monitor.wait();
> > > System.out.println("continue first
> > > transaction");
> > > return null;
> > > }
> > > });
> > > }
> > > return null;
> > > }
> > > });
> > >
> > > Transaction tx =
> > > transactions.txStart(TransactionConcurrency.OPTIMISTIC,
> > > TransactionIsolation.READ_COMMITTED);
> > > cache.put("key1", "val1");
> > > cache.put("key2", "val2");
> > > cache.put("key3", "val3");
> > > tx.commit();
> > >
> > > }
> > > }
> > >
> > >
> > > чт, 30 мар. 2017 г. в 11:55, Alexey Goncharuk <
> > alexey.goncha...@gmail.com
> > > >:
> > >
> > > > Can you please paste the full example?
> > > >
> > > > 2017-03-30 11:50 GMT+03:00 ALEKSEY KUZNETSOV <
> alkuznetsov...@gmail.com
> > >:
> > > >
> > > > > But i managed to read dirty. That is my example :
> > > > >
> > > > > Ignite ignite0 = ignite(0);
> > > > > IgniteTransactions transactions = ignite0.transactions();
> > > > > IgniteCache<String, String> cache =
> > > > ignite0.getOrCreateCache("testCache");
> > > > > Object monitor = new Object();
> > > > >
> > > > > GridTestUtils.runAsync(new Callable<Object>() {
> > > > > @Override
> > > > > public Object call() throws Exception {
> > > > > synchronized (monitor){
> > > > > doInTransaction(ignite(1), new Callable<Object>() {
> > > > > @Override
> > > > > public Object call() throws Exception {
> > > > > cache.put("key1", "val1");
> > > > > monitor.wait();
> > > > > return null;
> > > > > }
> > > > > });
> > > > > }
> > > > > return null;
> > > > > }
> > > > > });
> > > > >
> > > > > Transaction tx =
> > > > > transactions.txStart(TransactionConcurrency.OPTIMISTIC,
> > > > > TransactionIsolation.READ_COMMITTED);
> > > > > cache.put("key1", "val1");
> > > > >
> > > > > And through debugging cache.put() method i can see in method
> > > > > *org.apache.ignite.internal.processors.cache.distributed.
> > > > > near.GridNearTxLocal#enlistWriteEntry*
> > > > > that "key1" already *EXISTS *in internal cache :
> > > > cacheCtx.cache().entryEx()
> > > > > returns not null.
> > > > >
> > > > > ср, 29 мар. 2017 г. в 20:11, Alexander Fedotov <
> > > > > alexander.fedot...@gmail.com
> > > > > >:
> > > > >
> > > > > Hello Aleksey,
> > > > >
> > > > > No, the enlisted entry won't be visible for other transactions.
> Dirty
> > > > reads
> > > > > are not allowed in Ignite.
> > > > >
> > > > > Kind regards,
> > > > > Alex
> > > > >
> > > > > 29 марта 2017 г. 7:36 PM пользователь "ALEKSEY KUZNETSOV" <
> > > > > alkuznetsov...@gmail.com> написал:
> > > > >
> > > > > Hello, Igniters! I have one more question to you. Will appreciate
> any
> > > > help.
> > > > > Consider cache with near , dht configured not null.
> > > > > When we start commit transaction , in method
> > > > > *org.apache.ignite.internal.processors.cache.distributed.
> > > > > near.GridNearTxLocal#enlistWriteEntry*
> > > > > we put newly created entry into cache by executing entryEx().
> > > > > I wonder if this entry will became visible for other transactions!?
> > > > > --
> > > > >
> > > > > *Best Regards,*
> > > > >
> > > > > *Kuznetsov Aleksey*
> > > > >
> > > > > --
> > > > >
> > > > > *Best Regards,*
> > > > >
> > > > > *Kuznetsov Aleksey*
> > > > >
> > > >
> > > --
> > >
> > > *Best Regards,*
> > >
> > > *Kuznetsov Aleksey*
> > >
> >
> --
>
> *Best Regards,*
>
> *Kuznetsov Aleksey*
>
