svn commit: r1725281 - /jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/rdb/RDBBlobStore.java

[reschke]

Author: reschke
Date: Mon Jan 18 14:48:07 2016
New Revision: 1725281

URL: http://svn.apache.org/viewvc?rev=1725281&view=rev
Log:
OAK-3872: RDBBlobStore - fix problem when cleaning up data rows (ported to 1.0)

Thanks to Amit Jain for the report and the repro test case; used the fix 
proposed by Thomas Mueller, added diagnostics and tuned test case.

(Also refactored a bit to minimize differences from current branches; 
discovered a bug while doing so)

Modified:
    
jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/rdb/RDBBlobStore.java

Modified: 
jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/rdb/RDBBlobStore.java
URL: 
http://svn.apache.org/viewvc/jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/rdb/RDBBlobStore.java?rev=1725281&r1=1725280&r2=1725281&view=diff
==============================================================================
--- 
jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/rdb/RDBBlobStore.java
 (original)
+++ 
jackrabbit/oak/branches/1.0/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/rdb/RDBBlobStore.java
 Mon Jan 18 14:48:07 2016
@@ -486,11 +486,15 @@ public class RDBBlobStore extends Cachin
 
     @Override
     public boolean deleteChunks(List<String> chunkIds, long 
maxLastModifiedTime) throws Exception {
+        return (chunkIds.size() == countDeleteChunks(chunkIds, 
maxLastModifiedTime));
+    }
 
+    // @Override OAK-2973
+    public long countDeleteChunks(List<String> chunkIds, long 
maxLastModifiedTime) throws Exception {
         // sanity check
         if (chunkIds.isEmpty()) {
             // sanity check, nothing to do
-            return true;
+            return 0;
         }
 
         Connection con = this.ch.getRWConnection();
@@ -509,7 +513,7 @@ public class RDBBlobStore extends Cachin
                 // delete only if the last modified is OLDER than x
                 metaStatement.append(" and LASTMOD <= ?");
                 // delete if there is NO entry where the last modified of the 
meta is YOUNGER than x
-                dataStatement.append(" and not exists(select * from " + 
this.tnMeta + " m where ID = m.ID and m.LASTMOD >= ?)");
+                dataStatement.append(" and not exists(select * from " + 
this.tnMeta + " m where ID = m.ID and m.LASTMOD > ?)");
             }
 
             prepMeta = con.prepareStatement(metaStatement.toString());
@@ -531,10 +535,10 @@ public class RDBBlobStore extends Cachin
                 String message = String.format(
                         "chunk deletion affected different numbers of DATA 
records (%s) and META records (%s)", deletedMeta,
                         deletedData);
-                System.err.println(message);
                 LOG.info(message);
             }
-            return deletedMeta == chunkIds.size();
+
+            return deletedMeta;
         } finally {
             closeStatement(prepMeta);
             closeStatement(prepData);