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Amazon EMR WAL (EMRWAL) CLI reference

The EMRWAL Command Line Interface (EMRWAL CLI) is a unified tool to manage your write-ahead log (WAL) for Amazon EMR. The EMRWAL CLI ships with EMR clusters when you enable WAL at the time that you create a cluster. For more information about enabling WAL, see Write-ahead logs (WAL) for Amazon EMR.

The EMRWAL CLI includes the following commands:

createWorkspace

The createWorkspace command creates a new Amazon EMR WAL workspace.

Usage:

emrwal createWorkspace [-tags <tags>] [-e {endpoint}] [-r {Region}] -w {workspacename} [-h]

Example:

emrwal createWorkspace -w examplews

deleteWal

The deleteWals command deletes the Amazon EMR WAL that you specify.

Usage:

emrwal deleteWal [-e {endpoint}] [-r {Region}] [-w {workspacename}] [-p <tablePrefix>] [-n <walName>] [-N <fullName>] [-R] [-m] [-h]

Example:

emrwal deleteWal -w examplews -p hbasetable -n examplewal

deleteWorkspace

The deleteWorkspace command deletes the Amazon EMR WAL workspace that you specify.

Usage:

emrwal deleteWorkspace [-e {endpoint}] [-r {Region}] -w {workspacename} [-h]

Example:

emrwal deleteWorkspace -w examplews

listTagsForResource

The listTagsForResource command lists all of the key-value pair tags for the Amazon EMR WAL workspace that you specify.

Usage:

emrwal listTagsForResource -arn {resource-arn} [-e {endpoint}] [-r {Region}] [-h]

Example:

emrwal listTagsForResource -arn arn:aws:emrwal::1234567891234:workspace/examplews

listWals

The listWals command lists all of the Amazon EMR WALs in the workspace that you specify.

Usage:

emrwal listWals [-nextToken {token-string}] [-pageSize {integer}] [-e {endpoint}] [-r {Region}] [-w {workspacename}] [-p <tablePrefix>] [-M {integer}] [-h]

Example:

emrwal listWals -w examplews

listWorkspaces

The listWorkspaces command lists all of the Amazon EMR WAL workspaces that are available to you.

Usage:

emrwal listWorkspaces [-nextToken {token-string}] [-pageSize {integer}] [-e {endpoint}] [-r {Region}] [-M {integer}] [-h]

Example:

emrwal listWorkspaces

tagResource

The tagResource command assigns one or more key-value pair tags to the Amazon EMR WAL workspace that you specify.

Usage:

emrwal tagResource -arn {resource-arn} -tags <tags> [-e {endpoint}] [-r {Region}] [-h]

Example:

emrwal tagResource -arn arn:aws:emrwal::1234567891234:workspace/examplews -tags tag_key=tag_value

untagResource

The untagResource command unassigns one or more key-value pair tags to the Amazon EMR WAL workspace that you specify.

Usage:

emrwal untagResource -arn {resource-arn} -tagKeys <tagKeys> [-e {endpoint}] [-r {Region}] [-h]

Example:

emrwal untagResource -arn arn:aws:emrwal::1234567891234:workspace/examplews -tagKeys tag_key