druid/docs/content/development/extensions-contrib/azure.md

layout	title
doc_page	Microsoft Azure

Microsoft Azure

To use this extension, make sure to include druid-azure-extensions extension.

Deep Storage

Microsoft Azure Storage is another option for deep storage. This requires some additional druid configuration.

Property	Possible Values	Description	Default
druid.storage.type	azure		Must be set.
druid.azure.account		Azure Storage account name.	Must be set.
druid.azure.key		Azure Storage account key.	Must be set.
druid.azure.container		Azure Storage container name.	Must be set.
druid.azure.protocol	http or https		https
druid.azure.maxTries		Number of tries before cancel an Azure operation.	3

See Azure Services for more information.

Firehose

StaticAzureBlobStoreFirehose

This firehose ingests events, similar to the StaticS3Firehose, but from an Azure Blob Store.

Data is newline delimited, with one JSON object per line and parsed as per the InputRowParser configuration.

The storage account is shared with the one used for Azure deep storage functionality, but blobs can be in a different container.

As with the S3 blobstore, it is assumed to be gzipped if the extension ends in .gz

This firehose is splittable and can be used by native parallel index tasks. Since each split represents an object in this firehose, each worker task of index_parallel will read an object.

Sample spec:

"firehose" : {
    "type" : "static-azure-blobstore",
    "blobs": [
        {
          "container": "container",
          "path": "/path/to/your/file.json"
        },
        {
          "container": "anothercontainer",
          "path": "/another/path.json"
        }
    ]
}

This firehose provides caching and prefetching features. In IndexTask, a firehose can be read twice if intervals or shardSpecs are not specified, and, in this case, caching can be useful. Prefetching is preferred when direct scan of objects is slow.

property	description	default	required?
type	This should be static-azure-blobstore.	N/A	yes
blobs	JSON array of Azure blobs.	N/A	yes
maxCacheCapacityBytes	Maximum size of the cache space in bytes. 0 means disabling cache. Cached files are not removed until the ingestion task completes.	1073741824	no
maxFetchCapacityBytes	Maximum size of the fetch space in bytes. 0 means disabling prefetch. Prefetched files are removed immediately once they are read.	1073741824	no
prefetchTriggerBytes	Threshold to trigger prefetching Azure objects.	maxFetchCapacityBytes / 2	no
fetchTimeout	Timeout for fetching an Azure object.	60000	no
maxFetchRetry	Maximum retry for fetching an Azure object.	3	no

Azure Blobs:

property	description	default	required?
container	Name of the azure container	N/A	yes
path	The path where data is located.	N/A	yes