[jira] [Issue Comment Deleted] (FLUME-2354) Fix possible race condition in Cursor

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

     [ https://issues.apache.org/jira/browse/FLUME-2354?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

hailinzeng updated FLUME-2354:
------------------------------

    Comment: was deleted

(was: patch file

317,324d316
<       // d) possable seen a late timestamp change after size has changed
<       if (in.size() == chlen && file.length() == chlen
<            && file.lastModified() != lastFileMod) {
<         LOG.debug("tail " + file + " : only seen modified timestamp changed, "
<             + "postponing judgement");
<         return false;
<       }
< 
)

> Fix possible race condition in Cursor
> -------------------------------------
>
>                 Key: FLUME-2354
>                 URL: https://issues.apache.org/jira/browse/FLUME-2354
>             Project: Flume
>          Issue Type: Bug
>          Components: Sinks+Sources
>    Affects Versions: v0.9.5
>            Reporter: hailinzeng
>   Original Estimate: 0.5h
>  Remaining Estimate: 0.5h
>
> It is possible to seen a late modification timestamp change after file size has changed. 
> // host-time file-size file-modified-time
> // 12:00    50k    12:00
> // 12:01    51k    12:00
> // 12:02    51k    12:01 <- 
> If this happens, and nothing new is written after sleepped 1s in line 293, Cursor will resetRAF and read this file from beginning again !



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