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From "mck (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-13121) repair progress message breaks legacy JMX support
Date Sun, 13 May 2018 01:55:00 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-13121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

mck updated CASSANDRA-13121:
----------------------------
    Fix Version/s:     (was: 4.0)

> repair progress message breaks legacy JMX support
> -------------------------------------------------
>
>                 Key: CASSANDRA-13121
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13121
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Streaming and Messaging
>            Reporter: Scott Bale
>            Assignee: Patrick Bannister
>            Priority: Minor
>              Labels: jmx, lhf, notifications, repair
>             Fix For: 3.0.x, 3.11.x
>
>         Attachments: 13121-3.0.txt
>
>
> The error progress message in {{RepairRunnable}} is not compliant with the {{LegacyJMXProgressSupport}}
class, which uses a regex to match on the text of a progress event. Therefore, actual failures
slip through as successes if using legacy JMX for repairs.
> In {{RepairRunnable}}
> {code}
>     protected void fireErrorAndComplete(String tag, int progressCount, int totalProgress,
String message)
>     {
>         fireProgressEvent(tag, new ProgressEvent(ProgressEventType.ERROR, progressCount,
totalProgress, message));
>         fireProgressEvent(tag, new ProgressEvent(ProgressEventType.COMPLETE, progressCount,
totalProgress, String.format("Repair command #%d finished with error", cmd)));
>     }
> {code}
> Note the {{"Repair command #%d finished with error"}}
> See https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/repair/RepairRunnable.java#L109
> In {{LegacyJMXProgressSupport}}:
> {code}
>     protected static final Pattern SESSION_FAILED_MATCHER = Pattern.compile("Repair session
.* for range .* failed with error .*");
>     protected static final Pattern SESSION_SUCCESS_MATCHER = Pattern.compile("Repair
session .* for range .* finished");
> {code}
> See https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/utils/progress/jmx/LegacyJMXProgressSupport.java#L38
> Legacy JMX support was introduced for CASSANDRA-11430 (version 2.2.6) and the bug was
introduced as part of CASSANDRA-12279 (version 2.2.8).



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