title: What's this error in marklogic logs - XDMP-FORESTNOT , SVC-FILWRT, Invalid argument
body: <p>ML version - <code>8.0-6.3</code></p>
  
  <p><code>ErrorLog.txt</code> has the following errors:</p>
  
  <blockquote>
    <p>2019-07-06 02:50:27.393 Notice: rsuite-xdbc: XDMP-FORESTNOT: Forest
    forest-f4 not available: XDMP-FORESTERR: Error in checkpoint of forest
    forest-f4: SVC-FILWRT: File write error: write
    'D:\MarkLogic\Forests\forest-f4\Journals\Journal-20190705-154854-149559215-15623417344051124-12863660834980579462':
    Invalid argument</p>
    
    <p>2019-07-06 02:50:27.645 Notice: rsuite-xdbc: XDMP-FORESTNOT: Forest
    forest-f4 not available: XDMP-FORESTERR: Error in checkpoint of forest
    forest-f4: SVC-FILWRT: File write error: write
    'D:\MarkLogic\Forests\forest-f4\Journals\Journal-20190705-154854-149559215-15623417344051124-12863660834980579462':
    Invalid argument</p>
  </blockquote>
  
  <p>Searched in google but no gain.
  Please help me understand this error.</p>
  
  <p>After restarting the Marklogic I don't see this error but I am curious to know the reason behind this error.</p>
  
  <p><strong>Update:</strong></p>
  
  <p>I could see these errors as well in the log file.</p>
  
  <blockquote>
    <p>XDMP-FORESTERR: Error in checkpoint of forest rsuite-f5: XDMP-MEMORY:
    Memory exhausted 2019-07-10 16:39:09.250 Notice: rsuite-xdbc:
    XDMP-MEMORY: Memory exhausted</p>
  </blockquote>
  
  <p>which memory is exhaused, RAM or DISK?</p>
  
  <p>DISK has almost 800GB free space.</p>