[jira] [Updated] (DAFFODIL-1799) Enable data streaming in the CLI

["Steve Lawrence (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DAFFODIL-1799?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steve Lawrence updated DAFFODIL-1799:
-------------------------------------
    Fix Version/s:     (was: 2.1.0)
                   2.2.0
                   2.2.0

> Enable data streaming in the CLI
> --------------------------------
>
>                 Key: DAFFODIL-1799
>                 URL: https://issues.apache.org/jira/browse/DAFFODIL-1799
>             Project: Daffodil
>          Issue Type: Bug
>          Components: CLI, Performance
>            Reporter: Steve Lawrence
>            Priority: Major
>             Fix For: 2.2.0
>
>
> This CLI currently reads the input data as a byte array. This is simple and allows for ensuring all data is read into a memory, reducing disk overhead during the preformance command. However, this means the CLI is limited to the maximum size of an array, which is INT_MAX. In order to support the CLI parsing/unparsing larger files, we should instead work on InputStreams rather than array buffers. For the performance subcommand, this will mean requiring something like a SplittalbeInputStream that will allow multiple consumers of a single InputStream.
> Some SplittableInputStream implementations do exist, for example in JMRTD and on stack overflow, but licensing issues make it so these aren't an option. Either need to find a solution compatible with our license or implement our own.
> This work should be done concurrently with changes to improve the efficiency of the I/O layer.



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