Omer Frenkel has posted comments on this change.

Change subject: engine: Compare and set instead of updateVdsDynamic in VM 
scenarios
......................................................................


Patch Set 2: (3 inline comments)

....................................................
File 
backend/manager/modules/dal/src/main/java/org/ovirt/engine/core/dao/VdsDynamicDAODbFacadeImpl.java
Line 42:             entity.setId(Guid.createGuidFromString(rs
Line 43:                     .getString("vds_id")));
Line 44:             entity.setvm_active((Integer) rs.getObject("vm_active"));
Line 45:             entity.setvm_count(rs.getInt("vm_count"));
Line 46:             entity.setvms_cores_count(rs.getInt("vms_cores_count"));
this is a potential NPE..
even if current code doesn't set this to null, think of upgrade..
as long as field in db is nullable, our code should cope with nulls
Line 47:             entity.setvm_migrating((Integer) 
rs.getObject("vm_migrating"));
Line 48:             entity.setreserved_mem((Integer) 
rs.getObject("reserved_mem"));
Line 49:             entity.setguest_overhead(rs.getInt("guest_overhead"));
Line 50:             
entity.setsoftware_version(rs.getString("software_version"));


Line 45:             entity.setvm_count(rs.getInt("vm_count"));
Line 46:             entity.setvms_cores_count(rs.getInt("vms_cores_count"));
Line 47:             entity.setvm_migrating((Integer) 
rs.getObject("vm_migrating"));
Line 48:             entity.setreserved_mem((Integer) 
rs.getObject("reserved_mem"));
Line 49:             entity.setguest_overhead(rs.getInt("guest_overhead"));
same
Line 50:             
entity.setsoftware_version(rs.getString("software_version"));
Line 51:             entity.setversion_name(rs.getString("version_name"));
Line 52:             entity.setVersion(new 
RpmVersion(rs.getString("rpm_version")));
Line 53:             entity.setbuild_name(rs.getString("build_name"));


....................................................
File 
backend/manager/modules/vdsbroker/src/main/java/org/ovirt/engine/core/vdsbroker/MigrateVDSCommand.java
Line 61:         }
Line 62:     }
Line 63: 
Line 64:     private void updateDestinationVds(final Guid dstVdsId, final VM 
vm) {
Line 65:         TransactionSupport.executeInNewTransaction(new 
TransactionMethod<Void>() {
why new transaction? are you sure this information is not updated in other 
transaction and will cause db lock? (maintenance/non operational/rerun flows)
Line 66:             @Override
Line 67:             public Void runInTransaction() {
Line 68:                 DbFacade.getInstance()
Line 69:                         .getVdsDynamicDao()


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Gerrit-MessageType: comment
Gerrit-Change-Id: I363afc5c3411b0c13e6d6c9ed5b16004738b6ca7
Gerrit-PatchSet: 2
Gerrit-Project: ovirt-engine
Gerrit-Branch: master
Gerrit-Owner: Michael Kublin <[email protected]>
Gerrit-Reviewer: Arik Hadas <[email protected]>
Gerrit-Reviewer: Barak Azulay <[email protected]>
Gerrit-Reviewer: Eli Mesika <[email protected]>
Gerrit-Reviewer: Gilad Chaplik <[email protected]>
Gerrit-Reviewer: Michael Kublin <[email protected]>
Gerrit-Reviewer: Omer Frenkel <[email protected]>
Gerrit-Reviewer: Roy Golan <[email protected]>
Gerrit-Reviewer: Yair Zaslavsky <[email protected]>
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