[jira] [Created] (SENTRY-1804) Sentry server can be more efficient in handling full snapshot from HMS

["Alexander Kolbasov (JIRA)" <ji...@apache.org>]

Alexander Kolbasov created SENTRY-1804:
------------------------------------------

             Summary: Sentry server can be more efficient in handling full snapshot from HMS
                 Key: SENTRY-1804
                 URL: https://issues.apache.org/jira/browse/SENTRY-1804
             Project: Sentry
          Issue Type: Improvement
          Components: Sentry
    Affects Versions: sentry-ha-redesign
            Reporter: Alexander Kolbasov


When Sentry server creates a full snapshot, it does the following:

1) Calls {{fetchFullUpdate()}} to get a full snapshot. This returns {{Map<String, Set<String>>}}
2) Goes through all entries and converts them to a different format, allocating memory again for each element:

{code}
          for (Map.Entry<String, Set<String>> authzPath : authzPaths.entrySet()) {
            createAuthzPathsMappingCore(pm, nextHmsImageID, authzPath.getKey(), authzPath.getValue());
          }
{code}

The original full snapshot is then garbage collected and the new one persisted.

Instead, {{fetchFullUpdate()}} should just create the full snapshot immediately in the final form. This way we do not have to allocate twice as much memory as needed.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)