Support write-no-sync mode for Sleepycat repositories.

2 files changed, 22 insertions, 4 deletions

diff --git a/RELEASE-NOTES.txt b/RELEASE-NOTES.txt
index 423b3ca..6e71fbc 100644
--- a/RELEASE-NOTES.txt
+++ b/RELEASE-NOTES.txt
@@ -7,6 +7,7 @@ Carbonado change history
   table analyze to run.

 - When a property evolves from a boxed primitive to an unboxed primitive, null

   is converted to zero or false instead of throwing a NullPointerException.

+- Support write-no-sync mode for Sleepycat repositories.

 

 1.1-BETA6 to 1.1-BETA7

 -------------------------------

diff --git a/src/main/java/com/amazon/carbonado/repo/sleepycat/BDBRepositoryBuilder.java b/src/main/java/com/amazon/carbonado/repo/sleepycat/BDBRepositoryBuilder.java
index 28123a3..86636c4 100644
--- a/src/main/java/com/amazon/carbonado/repo/sleepycat/BDBRepositoryBuilder.java
+++ b/src/main/java/com/amazon/carbonado/repo/sleepycat/BDBRepositoryBuilder.java
@@ -91,6 +91,7 @@ public class BDBRepositoryBuilder extends AbstractRepositoryBuilder {
     private double mLockTimeout = 0.5;

     private double mTxnTimeout = 300.0;

     private boolean mTxnNoSync;

+    private boolean mTxnWriteNoSync;

     private Boolean mDatabasesTransactional = null;

     private Map<Class<?>, Integer> mDatabasePageSizes;

     private boolean mPrivate;

@@ -422,22 +423,38 @@ public class BDBRepositoryBuilder extends AbstractRepositoryBuilder {
     }

 

     /**

-     * When true, commits are not forcibly flushed to disk. This improves

-     * performance, but there is a chance of losing the most recent commits if

-     * the machine crashes.

+     * When true, commits are not immediately written or flushed to disk. This

+     * improves performance, but there is a chance of losing the most recent

+     * commits if the process is killed or if the machine crashes.

      */

     public void setTransactionNoSync(boolean noSync) {

         mTxnNoSync = noSync;

     }

 

     /**

-     * Returns true if transactions are forcibly flushed to disk.

+     * Returns true if transactions are not written or flushed to disk.

      */

     public boolean getTransactionNoSync() {

         return mTxnNoSync;

     }

 

     /**

+     * When true, commits are written, but they are not flushed to disk. This

+     * improves performance, but there is a chance of losing the most recent

+     * commits if the machine crashes.

+     */

+    public void setTransactionWriteNoSync(boolean noSync) {

+        mTxnWriteNoSync = noSync;

+    }

+

+    /**

+     * Returns true if transactions are not flushed to disk.

+     */

+    public boolean getTransactionWriteNoSync() {

+        return mTxnWriteNoSync;

+    }

+

+    /**

      * When true, allows databases to be transactional. This setting affects

      * the databases, not the environment. If this is not explicitly set, the

      * environment getTransactional is used.