Menu
▾
▴
hibernate-issues
|
From: Assaf B. (JIRA) <no...@at...> - 2006-06-06 02:09:19
|
2nd level cached collections are locked causing a cache miss
------------------------------------------------------------
Key: HHH-1813
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1813
Project: Hibernate3
Type: Bug
Versions: 3.1
Environment: Hibernate 3.1, Oracle 10g, Linux
Reporter: Assaf Berg
Priority: Critical
Attachments: testcase.tar.gz
Using the second level cache, collections are fetched from the database due to the cached item being locked.
This happens in the most simple use case:
1. Insert an entity with a collection
2. Commit.
3. Fetch the entity
I've written a simple test case and see the following in the log file:
11:52:47,159 DEBUG [ReadWriteCache] Invalidating: domain.Cat.kittens#539957
11:52:47,177 DEBUG [ReadWriteCache] Inserting: domain.Cat#539957
11:52:47,179 DEBUG [ReadWriteCache] Inserted: domain.Cat#539957
11:52:47,180 DEBUG [ReadWriteCache] Inserting: domain.Kitten#540214
11:52:47,180 DEBUG [ReadWriteCache] Inserted: domain.Kitten#540214
11:52:47,181 DEBUG [ReadWriteCache] Releasing: domain.Cat.kittens#539957
11:52:49,221 DEBUG [ReadWriteCache] Caching: domain.Cat#539957
11:52:49,221 DEBUG [ReadWriteCache] Item was already cached: domain.Cat#539957
11:52:49,223 DEBUG [ReadWriteCache] Cache lookup: domain.Cat.kittens#539957
11:52:49,223 DEBUG [ReadWriteCache] Cached item was locked: domain.Cat.kittens#539957
11:52:49,229 DEBUG [ReadWriteCache] Caching: domain.Kitten#540214
11:52:49,229 DEBUG [ReadWriteCache] Item was already cached: domain.Kitten#540214
11:52:49,230 DEBUG [ReadWriteCache] Caching: domain.Cat.kittens#539957
11:52:49,231 DEBUG [ReadWriteCache] Cached: domain.Cat.kittens#539957
domain.Cat.kittens [C/H/M/P]: 1/0/1/1
domain.Cat [C/H/M/P]: 1/0/0/1
domain.Kitten [C/H/M/P]: 1/0/0/1
This happens whether the collection is mapped as inverse or not.
I've attached the test case source and hbms (although it might need to be tweaked for the proper DB before running, and I didn't include the dependencies JARs).
Here's a code excerpt of the interesting part (tx is TransactionTemplate using HibnerateTransactionManager and hibernate is HibernateTemplate from the spring framework):
tx.execute(new TransactionCallback() {
public Object doInTransaction(TransactionStatus status) {
// create a Cat with one Kitten
Cat cat = new Cat();
Kitten kitten = new Kitten();
cat.addKitten(kitten);
hibernate.save(cat);
return null;
}
});
Thread.sleep(2000L);
tx.execute(new TransactionCallback() {
public Object doInTransaction(TransactionStatus status) {
// load all cats
List<Cat> allCats = hibernate.loadAll(Cat.class);
return null;
}
});
I can supply further information if needed.
--
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
http://opensource.atlassian.com/projects/hibernate/secure/Administrators.jspa
-
For more information on JIRA, see:
http://www.atlassian.com/software/jira
|
|
From: Assaf B. (JIRA) <no...@at...> - 2006-06-06 01:46:35
|
[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-1813?page=comments#action_23267 ] Assaf Berg commented on HHH-1813: --------------------------------- By the way, if I load the same entity 5 times in a row I will get 5 misses on its collection. Using nonstrict-read-write strategy I get 1 miss and 4 hits, which is better but I expect the first load to hit as well because I've just inserted this entity. > 2nd level cached collections are locked causing a cache miss > ------------------------------------------------------------ > > Key: HHH-1813 > URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1813 > Project: Hibernate3 > Type: Bug > Versions: 3.1 > Environment: Hibernate 3.1, Oracle 10g, Linux > Reporter: Assaf Berg > Priority: Critical > Attachments: testcase.tar.gz > > > Using the second level cache, collections are fetched from the database due to the cached item being locked. > This happens in the most simple use case: > 1. Insert an entity with a collection > 2. Commit. > 3. Fetch the entity > I've written a simple test case and see the following in the log file: > 11:52:47,159 DEBUG [ReadWriteCache] Invalidating: domain.Cat.kittens#539957 > 11:52:47,177 DEBUG [ReadWriteCache] Inserting: domain.Cat#539957 > 11:52:47,179 DEBUG [ReadWriteCache] Inserted: domain.Cat#539957 > 11:52:47,180 DEBUG [ReadWriteCache] Inserting: domain.Kitten#540214 > 11:52:47,180 DEBUG [ReadWriteCache] Inserted: domain.Kitten#540214 > 11:52:47,181 DEBUG [ReadWriteCache] Releasing: domain.Cat.kittens#539957 > 11:52:49,221 DEBUG [ReadWriteCache] Caching: domain.Cat#539957 > 11:52:49,221 DEBUG [ReadWriteCache] Item was already cached: domain.Cat#539957 > 11:52:49,223 DEBUG [ReadWriteCache] Cache lookup: domain.Cat.kittens#539957 > 11:52:49,223 DEBUG [ReadWriteCache] Cached item was locked: domain.Cat.kittens#539957 > 11:52:49,229 DEBUG [ReadWriteCache] Caching: domain.Kitten#540214 > 11:52:49,229 DEBUG [ReadWriteCache] Item was already cached: domain.Kitten#540214 > 11:52:49,230 DEBUG [ReadWriteCache] Caching: domain.Cat.kittens#539957 > 11:52:49,231 DEBUG [ReadWriteCache] Cached: domain.Cat.kittens#539957 > domain.Cat.kittens [C/H/M/P]: 1/0/1/1 > domain.Cat [C/H/M/P]: 1/0/0/1 > domain.Kitten [C/H/M/P]: 1/0/0/1 > This happens whether the collection is mapped as inverse or not. > I've attached the test case source and hbms (although it might need to be tweaked for the proper DB before running, and I didn't include the dependencies JARs). > Here's a code excerpt of the interesting part (tx is TransactionTemplate using HibnerateTransactionManager and hibernate is HibernateTemplate from the spring framework): > tx.execute(new TransactionCallback() { > public Object doInTransaction(TransactionStatus status) { > // create a Cat with one Kitten > Cat cat = new Cat(); > Kitten kitten = new Kitten(); > cat.addKitten(kitten); > > hibernate.save(cat); > > return null; > } > }); > > Thread.sleep(2000L); > > tx.execute(new TransactionCallback() { > public Object doInTransaction(TransactionStatus status) { > // load all cats > List<Cat> allCats = hibernate.loadAll(Cat.class); > return null; > } > }); > I can supply further information if needed. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira |
|
From: Assaf B. (JIRA) <no...@at...> - 2006-06-07 16:38:34
|
[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-1813?page=comments#action_23293 ] Assaf Berg commented on HHH-1813: --------------------------------- Happens using Hibernate 3.2CR2 + ehcache 1.2 as well. > 2nd level cached collections are locked causing a cache miss > ------------------------------------------------------------ > > Key: HHH-1813 > URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1813 > Project: Hibernate3 > Type: Bug > Versions: 3.1 > Environment: Hibernate 3.1, Oracle 10g, Linux > Reporter: Assaf Berg > Priority: Critical > Attachments: testcase.tar.gz > > > Using the second level cache, collections are fetched from the database due to the cached item being locked. > This happens in the most simple use case: > 1. Insert an entity with a collection > 2. Commit. > 3. Fetch the entity > I've written a simple test case and see the following in the log file: > 11:52:47,159 DEBUG [ReadWriteCache] Invalidating: domain.Cat.kittens#539957 > 11:52:47,177 DEBUG [ReadWriteCache] Inserting: domain.Cat#539957 > 11:52:47,179 DEBUG [ReadWriteCache] Inserted: domain.Cat#539957 > 11:52:47,180 DEBUG [ReadWriteCache] Inserting: domain.Kitten#540214 > 11:52:47,180 DEBUG [ReadWriteCache] Inserted: domain.Kitten#540214 > 11:52:47,181 DEBUG [ReadWriteCache] Releasing: domain.Cat.kittens#539957 > 11:52:49,221 DEBUG [ReadWriteCache] Caching: domain.Cat#539957 > 11:52:49,221 DEBUG [ReadWriteCache] Item was already cached: domain.Cat#539957 > 11:52:49,223 DEBUG [ReadWriteCache] Cache lookup: domain.Cat.kittens#539957 > 11:52:49,223 DEBUG [ReadWriteCache] Cached item was locked: domain.Cat.kittens#539957 > 11:52:49,229 DEBUG [ReadWriteCache] Caching: domain.Kitten#540214 > 11:52:49,229 DEBUG [ReadWriteCache] Item was already cached: domain.Kitten#540214 > 11:52:49,230 DEBUG [ReadWriteCache] Caching: domain.Cat.kittens#539957 > 11:52:49,231 DEBUG [ReadWriteCache] Cached: domain.Cat.kittens#539957 > domain.Cat.kittens [C/H/M/P]: 1/0/1/1 > domain.Cat [C/H/M/P]: 1/0/0/1 > domain.Kitten [C/H/M/P]: 1/0/0/1 > This happens whether the collection is mapped as inverse or not. > I've attached the test case source and hbms (although it might need to be tweaked for the proper DB before running, and I didn't include the dependencies JARs). > Here's a code excerpt of the interesting part (tx is TransactionTemplate using HibnerateTransactionManager and hibernate is HibernateTemplate from the spring framework): > tx.execute(new TransactionCallback() { > public Object doInTransaction(TransactionStatus status) { > // create a Cat with one Kitten > Cat cat = new Cat(); > Kitten kitten = new Kitten(); > cat.addKitten(kitten); > > hibernate.save(cat); > > return null; > } > }); > > Thread.sleep(2000L); > > tx.execute(new TransactionCallback() { > public Object doInTransaction(TransactionStatus status) { > // load all cats > List<Cat> allCats = hibernate.loadAll(Cat.class); > return null; > } > }); > I can supply further information if needed. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira |
×
Want the latest updates on software, tech news, and AI?
Get latest updates about software, tech news, and AI from SourceForge directly in your inbox once a month.
Thanks for helping keep SourceForge clean.
X