Reduced accelerator optimization in Azure for OR query with multiple tags

Explanation

When Cloud object store policy has at least one query having multiple tag conditions combined using "OR" operator, the backups of Azure containers using accelerator enabled Cloud object store policy, shows loss of acceleration or backs up unchanged data.

This happens as the ordering of objects across multiple tags is not as expected for accelerator. Few objects that are not found in the tracklog even if they exist in tracklog and hence backed up repeatedly without getting accelerator benefit for these objects.

Workaround

Do not use OR condition while combining multiple tag conditions for Azure. Instead create separate query per tag.

For example,

Say that you have the following query (tagKey eq 'type' and tagValue eq 'text') or (tagKey eq 'type' and tagValue eq 'none) with say queryname datatype

You can create two queries say by name datatype-text with query (tagKey eq 'type' and tagValue eq 'text') and datatype-none with query (tagKey eq 'type' and tagValue eq 'none')