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https://issues.apache.org/jira/browse/SOLR-3685?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13423786#comment-13423786
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Markus Jelsma commented on SOLR-3685:
-------------------------------------
I should have added this. I allocate just 98MB to the heap and 32 to the
permgen so there just 130MB allocated.
> solrcloud crashes on startup due to excessive memory consumption
> ----------------------------------------------------------------
>
> Key: SOLR-3685
> URL: https://issues.apache.org/jira/browse/SOLR-3685
> Project: Solr
> Issue Type: Bug
> Components: replication (java), SolrCloud
> Affects Versions: 4.0-ALPHA
> Environment: Debian GNU/Linux Squeeze 64bit
> Solr 5.0-SNAPSHOT 1365667M - markus - 2012-07-25 19:09:43
> Reporter: Markus Jelsma
> Priority: Critical
> Fix For: 4.1
>
> Attachments: info.log
>
>
> There's a serious problem with restarting nodes, not cleaning old or unused
> index directories and sudden replication and Java being killed by the OS due
> to excessive memory allocation. Since SOLR-1781 was fixed index directories
> get cleaned up when a node is being restarted cleanly, however, old or unused
> index directories still pile up if Solr crashes or is being killed by the OS,
> happening here.
> We have a six-node 64-bit Linux test cluster with each node having two
> shards. There's 512MB RAM available and no swap. Each index is roughly 27MB
> so about 50MB per node, this fits easily and works fine. However, if a node
> is being restarted, Solr will consistently crash because it immediately eats
> up all RAM. If swap is enabled Solr will eat an additional few 100MB's right
> after start up.
> This cannot be solved by restarting Solr, it will just crash again and leave
> index directories in place until the disk is full. The only way i can restart
> a node safely is to delete the index directories and have it replicate from
> another node. If i then restart the node it will crash almost consistently.
> I'll attach a log of one of the nodes.
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