Azure table storage rest API including

How do I access my table storage using REST API.
Any example would be appreciated including enabling REST API.

Hi,
Please have a look at this article:
http://blogs.msdn.com/b/tconte/archive/2011/08/10/accessing-windows-azure-blob-storage-using-jquery.aspx, hope it helps. We could also consider use
Jquery to call codebehind to do some operation about Azure table storeage, if so we could choose azure SDK or azure storage rest API to do this.
Best Regards,
Jambor
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Where is Blob Storage REST API?

Where has Azure Blob Storage REST API reference gone?
All links to it became being redirected to http://azure.microsoft.com/en-us/documentation/
Is public REST API support discontinued and it becomes proprietary?

Hi,
I clicked on few of the links of main page link -
http://msdn.microsoft.com/en-us/library/azure/dd135733.aspx and I was able to open the operation details - For example,
List Containers-
http://msdn.microsoft.com/en-us/library/azure/dd179352.aspx
Put Blob -
http://msdn.microsoft.com/en-us/library/azure/dd179451.aspx
Delete Blob -
http://msdn.microsoft.com/en-us/library/azure/dd179413.aspx
Hope this helps.
http://sanganakauthority.blogspot.com/

How to improve performance for Azure Table Storage bulk loads

Hello all,
Would appreciate your help as we are facing a challenge.
We are tried to bulk load Azure table storage. We have a file that contains nearly 2 million rows.
We would need to reach a point where we could bulk load 100000-150000 entries per minute. Currently, it takes more than 10 hours to process the file..
We have tried Parallel.Foreach but it doesn't help. Today I discovered Partitioning in PLINQ. Would that be the way to go??
Any ideas? I have spent nearly two days in trying to optimize it using PLINQ, but still I am not sure what is the best thing to do.
Kindly, note that we shouldn't be using SQL/Azure SQL for this.
I would really appreciate your help.
Thanks

I'd think you're just pooling the parallel connections to Azure, if you do it on one system. You'd also have a bottleneck of round trip time from you, through the internet to Azure and back again.
You could speed it up by moving the data file to the cloud and process it with a Cloud worker role. That way you'd be in the datacenter (which is a much faster, more optimized network.)
Or, if that's not fast enough - if you can split the data so multiple WorkerRoles could each process part of the file, you can use the VM's scale to put enough machines to it that it gets done quickly.
Darin R.

How to select data from AZure table storage without row key and partition key

Hi
I need to select a data from azure table storage without rowkey and partition key. how in azure storage emulator click query it display all data from that table.
thanks
rajesh

Hi rajesh,
It seems that you didn't click query data using storage emulator. But I recommend you could use the azure server explore in your VS to view your data and query data. Please see this document (http://msdn.microsoft.com/en-us/library/azure/ff683677.aspx).
And base on my experience, you may need input the command on Azure storage emulator, such as this page(http://msdn.microsoft.com/en-us/library/azure/gg433005.aspx).
Regards,
Will
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Azure table storage design for simple social networking

What is the best table design if I want to use Azure Table Service for a simple social networking website?
The website could have millions of users.
Users need to be able to view a list of all other users in the system sorted by the number of mutual connections.
Users must be able to view a list of their connections
User must be able to view content posted by themselves and their connections.
One major design constraint is that Azure table service queries are generally limited to the partition key and row key when there are a large number of records or else they get really slow. Another constraint is that query results are only sorted by the
partition key and then the row key.

For your scenario, I think making use of the SQL Azure makes more senses than usage of azure table storage service offering, nature of the data looks more relational in this particular context which is not recommended for table storage model design.
You can get started with SQL Azure at -
http://azure.microsoft.com/en-us/services/sql-database/
Bhushan | Blog |
LinkedIn | Twitter

Migrating Azure table storage content to On prem SQl database

hi
is it possible to import azure table storage data to On prem Sql database ?

Hi
You cannot do it directly from SQL or Azure Storage Explorer.
But you can have a little application that extracts your table storage data into some CSV file like this:
http://blogs.msdn.com/b/jmstall/archive/2012/08/03/converting-between-azure-tables-and-csv.aspx
And then import the CSV file that you generate into your on-prem sql database
Regards
Aram
Aram Koukia

Azure Table Storage Unable to connect - Error on increasing load

I am using Windows Aure Website ( Reserved Instance) and doing the Inserts to an Azure table via http. ( Yes http). When i was doing load testing, foud the below error. It was like 2 hits / seconds... Not sure what is the reason?
Any thoughts? SDK issue?
HTTP_Request2_ConnectionException: Unable to connect to tcp://innovativetxtstorage.table.core.windows.net:80. Error: php_network_getaddresses: getaddrinfo failed: No such host is known.
C:\DWASFiles\Sites\innovativetxt\VirtualDirectory0\site\wwwroot\vendor\pear-pear.php.net\HTTP_Request2\HTTP\Request2\Adapter\Socket.php on line 324
>HTTP_Request2_SocketWrapper->__construct('tcp://innovative…', 10, Array)</td><td>C:\DWASFiles\Sites\innovative in C:\DWASFiles\Sites\innovativetxt\VirtualDirectory0\site\wwwroot\vendor\pear-pear.php.net\HTTP_Request2\HTTP\Request2\SocketWrapper.php
on line 116

Here is further information ...
In normal circumstance with 30 Hits per Minute to our our API.... It works fine. After that latency is too high that it gives time out. See the Attached Report..
All I am doing is reading the Azure table to verify user Loginand Password... ( Reading Same Entity Again and Again)
See teh Performance Test Report here... http://www.innovativetxt.com/BlitzPerformanceTest.pdf
My customer cannot send us more than 30 request per seconds.. we feel ourself in trouble by complains every day.
We are on reserved Instance Website URL is http://www.innovativetxt.com and we feel like latency is killing us.
1. Is it because of Aure Storage? Cannot handel load of that much?
Is it bec
( I have already turend of Tanggling, TCP 100 etc all tips implemented )
See the below error message from Log file.
[03-Aug-2013 09:37:01 UTC] PHP Fatal error: Uncaught <table style="border: 1px" cellspacing="0">
<tr><td colspan="3" style="background: #ff9999"> HTTP_Request2_ConnectionException: Unable to connect to tcp://innovativetxtstorage.table.core.windows.net:80. Error: php_network_getaddresses: getaddrinfo failed:
No such host is known. in C:\DWASFiles\Sites\innovativetxt\VirtualDirectory0\site\wwwroot\vendor\pear-pear.php.net\HTTP_Request2\HTTP\Request2\Adapter\Socket.php on line 324</td></tr>
<tr><td colspan="3" style="background-color: #aaaaaa; text-align: center; font-weight: bold;">Exception trace</td></tr>
<tr><td style="text-align: center; background: #cccccc; width:20px; font-weight: bold;">#</td><td style="text-align: center; background: #cccccc; font-weight: bold;">Function</td><td style="text-align:
center; background: #cccccc; font-weight: bold;">Location</td></tr>
<tr><td style="text-align: center;">0</td><td>HTTP_Request2_SocketWrapper->__construct('tcp://innovative…', 10, Array)</td><td>C:\DWASFiles\Sites\innovative in C:\DWASFiles\Sites\innovativetxt\VirtualDirectory0\site\wwwroot\vendor\pear-pear.php.net\HTTP_Request2\HTTP\Request2\SocketWrapper.php
on line 116

Accessing info. in Azure Dashboard from Rest API or powershell command let

Azure management portal shows CPU utilization aggregated at role level when I click on a hosted service.
Is there any way to access this info. using REST API or Azure powershell command lets?
Can some one please comment?
-Shiva
Shiva

Hi,
To get Performance metrics from Azure Here are some resources you may try:
Windows Azure Diagnostics and PowerShell – Performance Counters:
Part 1 |
Part 2
How To Easily Enable Windows Azure Diagnostics Remotely
Regards,
Shirisha Paderu

Using one azure table storage account for many customers with their own data

I'm developing app that will allow the customers to store their data in azure. However, currently I have no idea how to split accounts of the customers in azure. Yes, I'm just started to read the documentation, but maybe someone can point me to the
right topic?

It seems like it might be worth starting from the general guidance to developing multitenant cloud applications - this resource might help: http://msdn.microsoft.com/en-us/library/ff966499.aspx
The patterns covered in this guidance might apply to data storage mechanism chosen for the application - whether it's Azure Storage , Azure SQL DB or else.

How to read azure storage data using JAVA with REST API

Hi,
We have a cloud service in our lab. We have enabled diagnostics
in cloud services. So WADPerformanceCounterTable was created in storage account. Now , We want to read the WADPerformanceTable using
JAVA with REST API. Is there any way to collect these details. please give me any
sample code to connect azure storage using table service REST API.
Thanks & Regards
Rathidevi

Hi,
Please have a look at this article:
https://convective.wordpress.com/2010/08/18/examples-of-the-windows-azure-storage-services-rest-api/, it demonstrate how to use table service Rest API, it also give us the code, hope this helps. Of course, the
MSDN article could also help us coding.
Best Regards,
Jambor
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Is this the best design for asynchronous notifications (such as email)? Current design uses Web Site, Azure Service Bus Queue, Table Storage and Cloud Service Worker Role.

I am asking for feedback on this design. Here is an example user story:
As a group admin on the website I want to be notified when a user in my group uploads a file to the group.
Easiest solution would be that in the code handling the upload, we just directly create an email message in there and send it. However, this seems like it isn't really the appropriate level of separation of concerns, so instead we are thinking to have a separate
worker process which does nothing but send notifications. So, the website in the upload code handles receiving the file, extracting some metadata from it (like filename) and writing this to the database. As soon as it is done handling the file upload it then
does two things: Writes the details of the notification to be sent (such as subject, filename, etc...) to a dedicated "notification" table and also creates a message in a queue which the notification sending worker process monitors. The entire sequence
is shown in the diagram below.
My questions are: Do you see any drawbacks in this design? Is there a better design? The team wants to use Azure Worker Roles, Queues and Table storage. Is it the right call to use these components or is this design unnecessarily complex? Quality attribute
requirements are that it is easy to code, easy to maintain, easy to debug at runtime, auditable (history is available of when notifications were sent, etc...), monitor-able. Any other quality attributes you think we should be designing for?
More info:
We are creating a cloud application (in Azure) in which there are at least 2 components. The first is the "source" component (for example a UI / website) in which some action happens or some condition is met that triggers a second component or "worker"
to perform some job. These jobs have details or metadata associated with them which we plan to store in Azure Table Storage. Here is the pattern we are considering:
Steps:
Condition for job met.
Source writes job details to table.
Source puts job in queue.
Asynchronously:
Worker accepts job from queue.
Worker Records DateTimeStarted in table.
Queue marks job marked as "in progress".
Worker performs job.
Worker updates table with details (including DateTimeCompleted).
Worker reports completion to queue.
Job deleted from queue.
Please comment and let me know if I have this right, or if there is some better pattern. For example sake, consider the work to be "sending a notification" such as an email whose template fields are filled from the "details" mentioned in
the pattern.

Hi,
Thanks for your posting.
This development mode can exclude some errors, such as the file upload complete at the same time... from my experience, this is a good choice to achieve the goal.
Best Regards,
Jambor
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Connect to an existing RESTful API?

I am trying to create a reporting solution for an existing data source which consists of an Azure SQL database and a number of Azure tables. Existing resources, including apps and a Single Page App, connect to the API. Power BI looks like a way to extend
flexible reporting to some power users.
I have been searching for several hours but I can't find any indication that Power BI can get data from an ordinary RESTful API. Am I missing something?
Thanks in advance,
Rob

Hi,
For ABAP configuration additioanlly you need to set the following properties.
1.ume.persistance.data_source_configuration = dataSourceConfiguration_abap.xml
2.ume.login.guest_user.uniqueids = Guest user id in the backend system (same as Guest, createed in the backend system)
For ex: In the backend system if you created the guest user as "J2EE_GUEST" with the role assigned as "SAP_J2EE_GUEST" then you have to give this value "J2EE_GUEST" for the parameter "ume.login.guest_user.uniqueids".
After chaning these values in config tool , save and restart the engine.
Thanks
R.Murali

Authentication for Stream Analytics REST Api

Hi there,
I am trying to use the stream analytics rest api from a java client. For other services (storage services for example), I am able to successfully use mutual certificate authorization. I create a management certificate using keytool and upload it through
the settings tab in azure portal. I then create an SSLContext from this certificate. This all works and I am able to get access to the storage services api.
The same flow does not seem to work for stream analytics api. When attempting to make an api call, I get 401 error code with the following response authorization header.
GET https://management.azure.com/subscriptions/{subscriptionId}/providers/Microsoft.StreamAnalytics/streamingjobs?api-version=2014-10-01-preview
WWW-Authenticate=[Bearer authorization_uri="https://login.windows.net/{...}", error="invalid_token", error_description="The access token is missing or invalid."]
The result is the same whether or not I configure the certificate on the client side. So, it seems like the mutual certificate authorization is not supported in stream analytics as it is in the other management APIs. Can you confirm if this feature is not
supported? If it is not supported, can you please provide some information on how we should be authenticating for stream analytics REST api?
Thanks

I did some more investigating. The Azure Stream Analytics REST Api documentation uses
https://management.azure.com/
as the base uri for managing stream analytics service. The .NET azure sdk source code on github, however, uses
https://management.core.windows.net/
for the same. So, I have tried accessing some different variations of resources.
https://management.core.windows.net/{my subscription id}/services/storageservices
Response: 200 OK
Here, I am using mutual certificate authorization to successfully reach storage services at management.core.windows.net. This verifies that the certificate authorization flow works for other services in the same subscription.
https://management.azure.com/subscriptions/{my subscription id}/resourcegroups/StreamAnalytics-Default-Central-US/providers/Microsoft.StreamAnalytics/streamingjobs?api-version=2014-10-01-preview
Response: 401 Unauthorized
Message: {"error":{"code":"AuthenticationFailed","message":"Authentication failed. The 'Authorization' header is not present or provided in an invalid format."}}
Now I attempt to use the same mutual certificate authorization on the management.azure.com base uri for stream analytics management. The request fails and the error message notes that an expected Authorization header is missing. This leads me to
believe that mutual certificate authorization is not supported on management.azure.com.
The Authorization header makes sense for OAuth2 flow, so I am thinking that management.azure.com
might only support OAuth2. I need server to server management, so OAuth2 flow will not work because it requires interactive browser redirect to work with management api. Active
Directory only gives delegate permissions to management services, not application permissions. I believe this rules out using OAuth2 / Active Directory for headless
authorization - please correct me if I am wrong.
https://management.core.windows.net/subscriptions/{my subscription id}/resourcegroups/StreamAnalytics-Default-Central-US/providers/Microsoft.StreamAnalytics/streamingjobs?api-version=2014-10-01-preview
Response: 403 Forbidden
Message: <Error xmlns="http://schemas.microsoft.com/windowsazure" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"><Code>ForbiddenError</Code><Message>The server failed to authenticate
the request. Verify that the certificate is valid and is associated with this subscription.</Message></Error>
Here I try to use the mangagement.core.windows.net base uri that is used in .net sdk. I get a 403 forbidden response. The error message indicates that the server attempted to complete the mutual certificate authorization. The server complains, though,
that the certificate is invalid. This is the same certificate used successfully to manage storage services, so I know the certificate is valid and the client flow works.
It would be great if someone could expand on the discrepancy between the base uri in the documentation vs .net sdk and provide some guidance on server to server authorization to stream analytics management api.
Thanks,
Dave

Max size of Azure table used in single ISS instance

Hi,
what is max size of an Azure Table used in a single
ISS instance?
Regards

Hi,
Please have a check on the below links.
http://blogs.msdn.com/b/avkashchauhan/archive/2011/11/30/how-the-size-of-an-entity-is-caclulated-in-windows-azure-table-storage.aspx
http://blogs.msdn.com/b/windowsazurestorage/archive/2010/07/09/understanding-windows-azure-storage-billing-bandwidth-transactions-and-capacity.aspx
http://msdn.microsoft.com/en-us/library/azure/jj553018.aspx
Hope this helps.
Regards,
Mekh.

Make the relationship in between multiple table storage's tables will affect the performance

Hi,
i'm going to develop business application,the product ID needs to be generic one and it should automatically generate the unique id(like identity in sql ) but,it has to be generate in formatted way
for example the ID would be "cityCode+areaCode+uniqueNumber" . here, cityCode and areaCode are going to maintain in separate table. while generate the product id, going to find the cityCode table and AreaCode table the generate unique
number by merge all the respective information.
1) while doing all this will affect the performance Azure table storage performance and web application ?
2) making multiple relationship among multi-Table Storage will decrease the performance ?.

Hello,
When you say tables, are referring to Azure Storage Tables or Relational Databases?
Please note Windows Azure tables do not function in the same manner as tables in a relational database since they do not make use of relationships or have schemas.
And if you are referring to relational databases, the latency in performance would depend on the logic used to generate the unique ID.
You should be able to use the logic in an On-Prem SQL database and check for the latency.
Regards,
Malar.

Azure table storage rest API including

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