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[HADOOP-13449] S3Guard: Implement DynamoDBMetadataStore.
...Provide an implementation of the metadata store backed by DynamoDB....
, 2016-10-24, 08:33
[HADOOP-13452] S3Guard: Implement access policy for intra-client consistency with in-memory metadata store.
...Implement an S3A access policy based on an in-memory metadata store. This can provide consistency within the same client without needing to integrate with an external system....
, 2016-10-19, 23:37
[HADOOP-13733] Support WASB connections through an HTTP proxy server.
...WASB currently does not support use of an HTTP proxy server to connect to the Azure Storage back-end. The Azure Storage SDK does support use of a proxy, so we can enhance WASB to read ...
, 2016-10-19, 11:44
Re: S3AFileSystem & read-after-write consistency
- [mail # user]
...Hello Dave,You are correct that S3A currently may suffer unexpected effects from eventual consistency due to negative caching on the S3 side for the initial HEAD request. In practice, ...
, 2016-10-18, 19:34
[HADOOP-13728] S3A can support short user-friendly aliases for configuration of credential providers.
...This issue proposes to support configuration of the S3A credential provider chain using short aliases to refer to the common credential providers in addition to allowing full class names. &n...
, 2016-10-18, 16:00
[HADOOP-13726] Enforce that FileSystem initializes only a single instance of the requested FileSystem.
...The FileSystem cache is intended to guarantee reuse of instances by multiple call sites or multiple threads. The current implementation does provide this guarantee, but there is a brie...
, 2016-10-18, 09:03
[HADOOP-13310] S3A reporting of file group as empty is harmful to compatibility for the shell.
...S3A does not persist group information in file metadata. Instead, it stubs the value of the group to an empty string. Although the JavaDocs for FileStatus#getGroup indicate that ...
, 2016-10-17, 12:44
[HADOOP-13692] hadoop-aws should declare explicit dependency on Jackson 2 jars to prevent classpath conflicts.
...If an end user's application has a dependency on hadoop-aws and no other Hadoop artifacts, then it picks up a transitive dependency on Jackson 2.5.3 jars through the AWS SDK. This can ...
, 2016-10-14, 12:04
[HADOOP-13309] Document S3A known limitations in file ownership and permission model.
...S3A does not match the implementation of HDFS in its handling of file ownership and permissions. Fundamental S3 limitations prevent it. This is a frequent source of confusion for...
, 2016-10-12, 17:18
[HADOOP-13687] Provide a unified dependency artifact that transitively includes the cloud storage modules shipped with Hadoop.
...Currently, downstream projects that want to integrate with different Hadoop-compatible file systems like WASB and S3A need to list dependencies on each one. This creates an ongoing mai...
, 2016-10-11, 21:01
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