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Posted to issues@sentry.apache.org by "Na Li (JIRA)" <ji...@apache.org> on 2018/03/19 18:35:00 UTC
[jira] [Updated] (SENTRY-2184) Performance Issue: MPath is queried
for each MAuthzPathsMapping in full snapshot
[ https://issues.apache.org/jira/browse/SENTRY-2184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Na Li updated SENTRY-2184:
--------------------------
Status: Patch Available (was: Open)
> Performance Issue: MPath is queried for each MAuthzPathsMapping in full snapshot
> --------------------------------------------------------------------------------
>
> Key: SENTRY-2184
> URL: https://issues.apache.org/jira/browse/SENTRY-2184
> Project: Sentry
> Issue Type: Bug
> Components: Sentry
> Affects Versions: 2.1.0
> Reporter: Na Li
> Assignee: Na Li
> Priority: Critical
> Attachments: SENTRY-2184.001.patch
>
>
> MAuthzPathsMapping contains list of MPath instances. From log message, when getting path full snapshot at SentryStore.retrieveFullPathsImageCore(), DataNucleus issues a query for all MPath instances associated with each MAuthzPathsMapping. Therefore, getting full path image may take a very long time.
> The solution is to get MPath in a batch when getting full path image.
> Log Message when DataNucleus issues a query for all MPath instances associated with each MAuthzPathsMapping
> {code:java}
> 1) Initially, all MAuthzPathsMapping entries for current snapshot is queried.
> 2018-03-14 11:51:23,999 (main) [DEBUG - org.datanucleus.util.Log4JLogger.debug(Log4JLogger.java:58)] SELECT 'org.apache.sentry.provider.db.service.model.MAuthzPathsMapping' AS NUCLEUS_TYPE,A0.AUTHZ_OBJ_NAME,A0.AUTHZ_SNAPSHOT_ID,A0.CREATE_TIME_MS,A0.AUTHZ_OBJ_ID FROM AUTHZ_PATHS_MAPPING A0 WHERE A0.AUTHZ_SNAPSHOT_ID = <1>
> 2) call authzToPaths.getPathStrings() causes MPath to be queried for each AUTHZ_OBJ_ID
> 2018-03-14 11:52:27,700 (main) [DEBUG - org.datanucleus.util.Log4JLogger.debug(Log4JLogger.java:58)] SELECT 'org.apache.sentry.provider.db.service.model.MPath' AS NUCLEUS_TYPE,A0.PATH_NAME,A0.PATH_ID FROM AUTHZ_PATH A0 WHERE A0.AUTHZ_OBJ_ID = <1>{code}
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