* Allow Cloud SegmentKillers to be instantiated without segment bucket or path
This change fixes a bug that was introduced that causes ingestion
to fail if data is ingested from one of the supported cloud storages
(Azure, Google, S3), and the user is using another type of storage
for deep storage. In this case the all segment killer implementations
are instantiated. A change recently made forced a dependency between
the supported cloud storage type SegmentKiller classes and the
deep storage configuration for that storage type being set, which
forced the deep storage bucket and prefix to be non-null. This caused
a NullPointerException to be thrown when instantiating the
SegmentKiller classes during ingestion.
To fix this issue, the respective deep storage segment configs for the
cloud storage types supported in druid are now allowed to have nullable
bucket and prefix configurations
* * Allow google deep storage bucket to be null
* Azure deep storage does not work with datasource name containing non-ASCII chars
Fixed a bug where recording the segment file location fails when
using Azure Deep Storage, if the datasource has any special
characters
* * update jacoco thresholds
* * resolve merge conflicts
* address review comments
* Ability to Delete task logs and segments from Azure Storage
* implement ability to delete all tasks logs or all task logs
written before a particular date when written to Azure storage
* implement ability to delete all segments from Azure deep storage
* * Address review comments
* Skip empty files for local, hdfs, and cloud input sources
* split hint spec doc
* doc for skipping empty files
* fix typo; adjust tests
* unnecessary fluent iterable
* address comments
* fix test
* use the right lists
* fix test
* fix test
* Move Azure extension into Core
Moving the azure extension into Core.
* * Fix build failure
* * Add The MIT License (MIT) to list of compatible licenses
* * Address review comments
* * change reference to contrib azure to core azure
* * Fix spelling mistakes.
zachjsh
Jihoon Son