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Posted to oak-commits@jackrabbit.apache.org by ju...@apache.org on 2014/04/24 18:52:34 UTC
svn commit: r1589794 -
/jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/TarReader.java
Author: jukka
Date: Thu Apr 24 16:52:33 2014
New Revision: 1589794
URL: http://svn.apache.org/r1589794
Log:
OAK-1762: TarMK: Fall back to normal IO when mmap fails
Improved warning message as suggested by by Michael Marth.
Modified:
jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/TarReader.java
Modified: jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/TarReader.java
URL: http://svn.apache.org/viewvc/jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/TarReader.java?rev=1589794&r1=1589793&r2=1589794&view=diff
==============================================================================
--- jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/TarReader.java (original)
+++ jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/TarReader.java Thu Apr 24 16:52:33 2014
@@ -204,7 +204,17 @@ class TarReader {
return new TarReader(file, mapped, index);
} catch (IOException e) {
log.warn("Failed to mmap tar file " + file
- + ", falling back to normal file IO",
+ + ". Falling back to normal file IO,"
+ + " which will negatively impact"
+ + " repository performance. This"
+ + " problem may have been caused by"
+ + " restrictions on the amount of"
+ + " virtual memory available to the"
+ + " JVM. Please make sure that a"
+ + " 64-bit JVM is being used and"
+ + " that the process has access to"
+ + " unlimited virtual memory"
+ + " (ulimit option -v).",
e);
}
}