Liron Ar has posted comments on this change.

Change subject: core: updateAllInBatch - sorting/transaction issues
......................................................................


Patch Set 2:

(1 comment)

http://gerrit.ovirt.org/#/c/28909/2/backend/manager/modules/dal/src/main/java/org/ovirt/engine/core/dao/MassOperationsGenericDaoDbFacade.java
File 
backend/manager/modules/dal/src/main/java/org/ovirt/engine/core/dao/MassOperationsGenericDaoDbFacade.java:

Line 55:             Collection<T> paramValues,
Line 56:             MapSqlParameterMapper<T> mapper) {
Line 57: 
Line 58:         // To overcome possible deadlocks, we need to sort the 
collection if the code is executed in transaction
Line 59:         if (TransactionSupport.current() != null) {
> if we use multiple transactions for batch, this is wrong.
not always, same as we for all dao operations, the caller is responsive for the 
transaction.

for example, when updating in batch the disc image dynamic data, we don't need 
the transaction as the disks are independent.
Line 60:             List<T> sortedParamValues = new ArrayList<>(paramValues);
Line 61:             Collections.sort(sortedParamValues, 
BusinessEntityComparator.<T, ID> newInstance());
Line 62:             paramValues = sortedParamValues;
Line 63:         }


-- 
To view, visit http://gerrit.ovirt.org/28909
To unsubscribe, visit http://gerrit.ovirt.org/settings

Gerrit-MessageType: comment
Gerrit-Change-Id: I935555bae208786e64f109e267749eafea57fb60
Gerrit-PatchSet: 2
Gerrit-Project: ovirt-engine
Gerrit-Branch: master
Gerrit-Owner: Liron Ar <lara...@redhat.com>
Gerrit-Reviewer: Allon Mureinik <amure...@redhat.com>
Gerrit-Reviewer: Daniel Erez <de...@redhat.com>
Gerrit-Reviewer: Eli Mesika <emes...@redhat.com>
Gerrit-Reviewer: Liran Zelkha <lzel...@redhat.com>
Gerrit-Reviewer: Liron Ar <lara...@redhat.com>
Gerrit-Reviewer: Maor Lipchuk <mlipc...@redhat.com>
Gerrit-Reviewer: Yair Zaslavsky <yzasl...@redhat.com>
Gerrit-Reviewer: automat...@ovirt.org
Gerrit-Reviewer: oVirt Jenkins CI Server
Gerrit-HasComments: Yes
_______________________________________________
Engine-patches mailing list
Engine-patches@ovirt.org
http://lists.ovirt.org/mailman/listinfo/engine-patches

Reply via email to