[Backlogmanager] [FIWARE-JIRA] (HELP-8764) [fiware-stackoverflow] Cosmos entered safe mode again. No read, no write, no update

[Fernando Lopez (JIRA)]

     [ https://jira.fiware.org/browse/HELP-8764?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Fernando Lopez updated HELP-8764:
---------------------------------
    Status: Answered  (was: In Progress)

> [fiware-stackoverflow] Cosmos entered safe mode again. No read, no write, no update
> -----------------------------------------------------------------------------------
>
>                 Key: HELP-8764
>                 URL: https://jira.fiware.org/browse/HELP-8764
>             Project: Help-Desk
>          Issue Type: Monitor
>          Components: FIWARE-TECH-HELP
>            Reporter: Backlog Manager
>            Assignee: Fermín Galán
>              Labels: fiware, fiware-cosmos
>
> Created question in FIWARE Q/A platform on 08-12-2015 at 11:12
> {color: red}Please, ANSWER this question AT{color} https://stackoverflow.com/questions/34153740/cosmos-entered-safe-mode-again-no-read-no-write-no-update
> +Question:+
> Cosmos entered safe mode again. No read, no write, no update
> +Description:+
> We saw yesterday that public Cosmos instance had entered safe mode and we couldn't update, write or delete any file. And today we see we can't read - open any file.
> When we tried to open a hadoop file we get this error:
> Java HotSpot(TM) 64-Bit Server VM warning: Insufficient space for shared memory file:
>    /tmp/hsperfdata_jonmikel.alonso/22367
> Try using the -Djava.io.tmpdir= option to select an alternate temp location.
> Exception in thread "main" java.lang.NoClassDefFoundError: ___/tmp/hsperfdata_jonmikel/alonso/22379
> Caused by: java.lang.ClassNotFoundException: ___.tmp.hsperfdata_jonmikel.alonso.22379
>     at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
>     at java.security.AccessController.doPrivileged(Native Method)
>     at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
>     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
>     at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> Could not find the main class: ___/tmp/hsperfdata_jonmikel.alonso/22379.  Program will exit.
> It seems this already happened before:
> Fi-Ware Cosmos: Name node is in safe mode
> SafeModeException at cosmos.lab.fi-ware.org



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