Liran Zelkha has posted comments on this change.

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


Patch Set 2:

(2 comments)

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) {
Why is that? Can't 2 different sections of the code run the batch update, 
regardless of the transaction?
Line 60:             List<T> sortedParamValues = new ArrayList<>(paramValues);
Line 61:             Collections.sort(sortedParamValues, 
BusinessEntityComparator.<T, ID> newInstance());
Line 62:             paramValues = sortedParamValues;
Line 63:         }


Line 61:             Collections.sort(sortedParamValues, 
BusinessEntityComparator.<T, ID> newInstance());
Line 62:             paramValues = sortedParamValues;
Line 63:         }
Line 64:         getCallsHandler().executeStoredProcAsBatch(procedureName == 
null ? getProcedureNameForUpdate() : procedureName,
Line 65:                 paramValues, mapper);
Good catch. Can't believe I missed it.
Line 66:     }
Line 67: 
Line 68:     @Override
Line 69:     public void removeAll(Collection<ID> ids) {


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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: Maor Lipchuk <mlipc...@redhat.com>
Gerrit-Reviewer: Yair Zaslavsky <yzasl...@redhat.com>
Gerrit-Reviewer: automat...@ovirt.org
Gerrit-Reviewer: oVirt Jenkins CI Server
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