HdfsNative

opendal::services

Struct HdfsNative 

Source 
pub struct HdfsNative { /* private fields */ }
Expand description

Hadoop Distributed File System (HDFS™) support. Using Native Rust HDFS client. A distributed file system that provides high-throughput access to application data. Using Native Rust HDFS client.

§Capabilities

This service can be used to:

  • stat
  • read
  • write
  • create_dir
  • delete
  • rename
  • list
  • blocking
  • append

§Differences with webhdfs

Webhdfs is powered by hdfs’s RESTful HTTP API.

§Differences with hdfs

hdfs is powered by libhdfs and require the Java dependencies

§Features

HDFS-native support needs to enable feature services-hdfs-native.

§Configuration

  • root: Set the work dir for backend.
  • name_node: Set the name node for backend.
  • enable_append: enable the append capacity. Default is false.

Implementations§

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impl HdfsNativeBuilder

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pub fn root(self, root: &str) -> Self

Available on crate feature services-hdfs-native only.

Set root of this backend.

All operations will happen under this root.

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pub fn name_node(self, name_node: &str) -> Self

Available on crate feature services-hdfs-native only.

Set name_node of this backend.

Valid format including:

  • default: using the default setting based on hadoop config.
  • hdfs://127.0.0.1:9000: connect to hdfs cluster.
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pub fn enable_append(self, enable_append: bool) -> Self

Available on crate feature services-hdfs-native only.

Enable append capacity of this backend.

This should be disabled when HDFS runs in non-distributed mode.

Trait Implementations§

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impl Builder for HdfsNativeBuilder

Available on crate feature services-hdfs-native only.
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type Config = HdfsNativeConfig

Associated configuration for this builder.
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fn build(self) -> Result<impl Access>

Consume the accessor builder to build a service.
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impl Debug for HdfsNativeBuilder

Available on crate feature services-hdfs-native only.
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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for HdfsNativeBuilder

Available on crate feature services-hdfs-native only.
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fn default() -> HdfsNativeBuilder

Returns the “default value” for a type. Read more

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