[jira] [Updated] (CASSANDRA-7197) Dead code in trunk

["Daniel Shelepov (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-7197?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daniel Shelepov updated CASSANDRA-7197:
---------------------------------------

    Attachment: trunk-7197.txt

> Dead code in trunk
> ------------------
>
>                 Key: CASSANDRA-7197
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7197
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>            Reporter: Daniel Shelepov
>            Priority: Minor
>              Labels: sourcecode
>         Attachments: trunk-7197.txt
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> I did some code analysis, and as a byproduct was able to identify some dead code in the form of files that can be safely removed.  After filtering out some false positives, this is what remained:
> gms/IFailureNotification.java
> - was there since FB open-sourced Cassandra; has never been used for anything.  No classes implement the interface, and it's not mentioned anywhere in the codebase.
> service/PendingRangeCalculatorServiceMBean.java 
> - empty MBean used as a base class for PendingRangeCalculatorService, but has not been touched since being introduced several months ago.  NOTE: removing this will require editing PendingRangeCalculatorService to not derive from this anymore.
> db/ColumnFamilyNotDefinedException.java
> - used to be thrown in original FB Cassandra; no longer used anywhere.
> db/context/IContext.java
> - introduced in 2c4ac98c9ffa8ea52da801830c7cdb745ddc28f0 (CASSANDRA-1072); was used extensively then, but no longer used anywhere.
> db/columniterator/SimpleAbstractColumnIterator.java
> - introduced in 48093358fb9022947592813a6aae43db148847ca (CASSANDRA-287); was used then; no longer used anywhere.
> thrift/RequestType.java
> - enum introduced in 72199e23ec9d604449bef87733a32e1da9924437 (CASSANDRA-3272); was used then; no longer used anywhere.
> utils/AtomicLongArrayUpdater.java
> - introduced in 22e18f5a348a911f89deed9f9984950de451d28a (CASSANDRA-3578), but has never been used for anything.  Not sure what the original intent might have been.
> utils/DefaultDouble.java
> - introduced in 96588d4f322dfbb1f5ff9328afe4377babfb1d2c (CASSANDRA-1715); was used then; no longer used anywhere.
> utils/LatencyTracker.java
> - introduced in 979a022f896aaa5a799b27a973cd476e5727820e (CASSANDRA-702); was used then; no longer used anywhere.
> utils/SkipNullRepresenter.java
> - introduced in a6777492280ae481392cd4cb4ba613923f84989d(CASSANDRA-1133) was used then; no longer used anywhere.



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