Storage delays when retrieving items after upgrading to EV 14.1.1 or later

Problem

After upgrading to Enterprise Vault (EV) 14.1.1 or later, EV storage may be noticeably slower. This can affect indexing, previewing search results and exporting items under the following conditions:

• A streamer partition type is being used (Dell ECS, Hitachi HCP, etc).
• There are a large number of vault store partitions in the EV site.

Error Message

There are no error messages. However a DTrace of StorageCrawler may show long delays while indexing. Below is an example from an EV test environment:

145646        08:16:32.558         [17640]        (StorageCrawler)        <18172>        EV:L        {CStreamerAPIStorageDeviceReader::ReadAllPartitionEntriesFromEVSite} (Entry)

223344        08:16:57.351         [17640]        (StorageCrawler)        <18172>        EV:L        {CStreamerAPIStorageDeviceReader::ReadAllPartitionEntriesFromEVSite} (Exit) Status: [Success]

Note the duration of 25 seconds to complete this call. 

Cause

Improper processing of messages under the above conditions caused the delay.

Solution

There are no plans to address this issue by way of a patch or hotfix in earlier versions of the software at the present time.  However, the issue has been addressed in the revision of the product specified at the end of this article. 
 
Please contact your Sales representative or the Sales group for upgrade information including upgrade eligibility to the release containing the resolution for this issue.

This issue is fixed in the following release(s), available in the Download Center at https://www.veritas.com/support:
- Enterprise Vault 14.5.1 
- Enterprise Vault 15.0