[jira] [Created] (HDDS-13324) Ozone Recon - Optimize memory footprint for listKeys API.

["Devesh Kumar Singh (Jira)" <ji...@apache.org>]

Devesh Kumar Singh created HDDS-13324:
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             Summary: Ozone Recon - Optimize memory footprint for listKeys API.
                 Key: HDDS-13324
                 URL: https://issues.apache.org/jira/browse/HDDS-13324
             Project: Apache Ozone
          Issue Type: Task
          Components: Ozone Recon
    Affects Versions: 2.0.0
            Reporter: Devesh Kumar Singh
            Assignee: Devesh Kumar Singh


While constructing full path prefix in constructFullPathPrefix method, below code can be expensive:
{code:java}
fullPath.insert(0, nsSummary.getDirName() + OM_KEY_PREFIX);{code}
 * Inserting at position {{0}} in a {{StringBuilder}} has *O(n)* cost because it must shift the entire buffer every time.

 * For deeply nested paths (e.g., {{{}/a/b/c/d/e/f/g/...{}}}), this compounds quickly.



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