svn commit: r1487369 - /jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/FileStore.java

[ju...@apache.org]

Author: jukka
Date: Wed May 29 07:39:07 2013
New Revision: 1487369

URL: http://svn.apache.org/r1487369
Log:
OAK-848: Segmentmk should log a warning when using the file backend on 32-bit systems

Modified:
    jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/FileStore.java

Modified: jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/FileStore.java
URL: http://svn.apache.org/viewvc/jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/FileStore.java?rev=1487369&r1=1487368&r2=1487369&view=diff
==============================================================================
--- jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/FileStore.java (original)
+++ jackrabbit/oak/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/FileStore.java Wed May 29 07:39:07 2013
@@ -41,11 +41,16 @@ import org.apache.jackrabbit.oak.plugins
 import org.apache.jackrabbit.oak.plugins.segment.SegmentStore;
 import org.apache.jackrabbit.oak.plugins.segment.Template;
 import org.apache.jackrabbit.oak.spi.state.NodeState;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import com.google.common.collect.Maps;
 
 public class FileStore implements SegmentStore {
 
+    /** Logger instance */
+    private static final Logger log = LoggerFactory.getLogger(FileStore.class);
+
     private static final long SEGMENT_MAGIC = 0x4f616b0a527845ddL;
 
     private static final long JOURNAL_MAGIC = 0xdf36544212c0cb24L;
@@ -68,6 +73,12 @@ public class FileStore implements Segmen
             Maps.newConcurrentMap();
 
     public FileStore(File directory, NodeState root) throws IOException {
+        // http://www.oracle.com/technetwork/java/hotspotfaq-138619.html#64bit_detection
+        if ("32".equals(System.getProperty("sun.arch.data.model"))) {
+            log.warn("TarMK will only work with small repositories"
+                    + " in a 32 bit JVM. Consider switching to a 64 bit JVM.");
+        }
+
         checkNotNull(directory).mkdirs();
         this.directory = directory;
         this.index = 0;