Database Reference
In-Depth Information
■
Make sure you turn off system-wide oDBC tracing once your data collection is over; otherwise, it can
significantly hurt performance of the entire system. Data collection carries with it overhead that you should tolerate only
when actively troubleshooting a problem.
Note
Logging Windows Azure Storage Blob Operations
You can configure your storage account to monitor and log operations that pass over the Windows Azure Storage Blob
(WASB). These include operations that you initiate from the Windows Azure Management Portal, from your .NET or
PowerShell clients, as well as file system operations from the
Hadoop Command Line
. Because these operations might
incur additional cost in terms of using storage space, logging and monitoring are turned off by default for your storage
account. Monitoring and logging can be enabled on all three types of storage: blobs, tables, and queues. You can
specify one of three available monitoring levels:
•
Off
•
Minimal
•
Verbose
Similarly, you can set the logging activities on your storage to one of three levels:
•
Read Requests
•
Write Requests
•
Delete Requests
Navigate to your storage account in the Azure Management portal. Click on the
Configure
link, and choose the
desired level of logging, as shown in Figure
11-7
.
