Make commit a public method. Introduce a auto-commit config. Relates issue https://github.com/uber/hoodie/issues/58 (#60)

hoodie-client/src/main/java/com/uber/hoodie/HoodieWriteClient.java

@@ -206,10 +206,7 @@ public class HoodieWriteClient<T extends HoodieRecordPayload> implements Seriali
             // Update the index back.
             JavaRDD<WriteStatus> resultRDD = index.updateLocation(upsertStatusRDD, metadata);
             resultRDD = resultRDD.persist(config.getWriteStatusStorageLevel());
-            boolean commitResult = commit(commitTime, resultRDD);
+            commitOnAutoCommit(commitTime, resultRDD);
-            if (!commitResult) {
-                throw new HoodieCommitException("Failed to commit " + commitTime);
-            }
             return resultRDD;
         } catch (Throwable e) {
             if (e instanceof HoodieUpsertException) {
@@ -219,6 +216,18 @@ public class HoodieWriteClient<T extends HoodieRecordPayload> implements Seriali
         }
     }
 
+    private void commitOnAutoCommit(String commitTime, JavaRDD<WriteStatus> resultRDD) {
+        if(config.shouldAutoCommit()) {
+            logger.info("Auto commit enabled: Committing " + commitTime);
+            boolean commitResult = commit(commitTime, resultRDD);
+            if (!commitResult) {
+                throw new HoodieCommitException("Failed to commit " + commitTime);
+            }
+        } else {
+            logger.info("Auto commit disabled for " + commitTime);
+        }
+    }
+
     private JavaRDD<HoodieRecord<T>> combineOnCondition(boolean condition,
         JavaRDD<HoodieRecord<T>> records, int parallelism) {
         if(condition) {
@@ -271,10 +280,7 @@ public class HoodieWriteClient<T extends HoodieRecordPayload> implements Seriali
             JavaRDD<WriteStatus> statuses = index.updateLocation(writeStatusRDD, metadata);
             // Trigger the insert and collect statuses
             statuses = statuses.persist(config.getWriteStatusStorageLevel());
-            boolean commitResult = commit(commitTime, statuses);
+            commitOnAutoCommit(commitTime, statuses);
-            if (!commitResult) {
-                throw new HoodieCommitException("Failed to commit " + commitTime);
-            }
             return statuses;
         } catch (Throwable e) {
             if (e instanceof HoodieInsertException) {
@@ -287,7 +293,8 @@ public class HoodieWriteClient<T extends HoodieRecordPayload> implements Seriali
     /**
      * Commit changes performed at the given commitTime marker
      */
-    private boolean commit(String commitTime, JavaRDD<WriteStatus> writeStatuses) {
+    public boolean commit(String commitTime, JavaRDD<WriteStatus> writeStatuses) {
+        logger.info("Comitting " + commitTime);
         Path commitFile =
             new Path(config.getBasePath() + "/.hoodie/" + FSUtils.makeCommitFileName(commitTime));
         try {
@@ -331,6 +338,7 @@ public class HoodieWriteClient<T extends HoodieRecordPayload> implements Seriali
                     writeContext = null;
                 }
             }
+            logger.info("Status of the commit " + commitTime + ": " + success);
             return success;
         } catch (IOException e) {
             throw new HoodieCommitException(

hoodie-client/src/main/java/com/uber/hoodie/config/HoodieWriteConfig.java

@@ -46,6 +46,9 @@ public class HoodieWriteConfig extends DefaultHoodieConfig {
     private static final String DEFAULT_COMBINE_BEFORE_UPSERT = "true";
     private static final String WRITE_STATUS_STORAGE_LEVEL = "hoodie.write.status.storage.level";
     private static final String DEFAULT_WRITE_STATUS_STORAGE_LEVEL = "MEMORY_AND_DISK_SER";
+    private static final String HOODIE_AUTO_COMMIT_PROP = "hoodie.auto.commit";
+    private static final String DEFAULT_HOODIE_AUTO_COMMIT = "true";
+
 
     private HoodieWriteConfig(Properties props) {
         super(props);
@@ -66,6 +69,10 @@ public class HoodieWriteConfig extends DefaultHoodieConfig {
         return props.getProperty(TABLE_NAME);
     }
 
+    public Boolean shouldAutoCommit() {
+        return Boolean.parseBoolean(props.getProperty(HOODIE_AUTO_COMMIT_PROP));
+    }
+
     public int getInsertShuffleParallelism() {
         return Integer.parseInt(props.getProperty(INSERT_PARALLELISM));
     }
@@ -211,6 +218,7 @@ public class HoodieWriteConfig extends DefaultHoodieConfig {
         private boolean isStorageConfigSet = false;
         private boolean isCompactionConfigSet = false;
         private boolean isMetricsConfigSet = false;
+        private boolean isAutoCommit = true;
 
         public Builder fromFile(File propertiesFile) throws IOException {
             FileReader reader = new FileReader(propertiesFile);
@@ -279,6 +287,11 @@ public class HoodieWriteConfig extends DefaultHoodieConfig {
             return this;
         }
 
+        public Builder withAutoCommit(boolean autoCommit) {
+            props.setProperty(HOODIE_AUTO_COMMIT_PROP, String.valueOf(autoCommit));
+            return this;
+        }
+
         public HoodieWriteConfig build() {
             HoodieWriteConfig config = new HoodieWriteConfig(props);
             // Check for mandatory properties
@@ -293,6 +306,8 @@ public class HoodieWriteConfig extends DefaultHoodieConfig {
                 COMBINE_BEFORE_UPSERT_PROP, DEFAULT_COMBINE_BEFORE_UPSERT);
             setDefaultOnCondition(props, !props.containsKey(WRITE_STATUS_STORAGE_LEVEL),
                 WRITE_STATUS_STORAGE_LEVEL, DEFAULT_WRITE_STATUS_STORAGE_LEVEL);
+            setDefaultOnCondition(props, !props.containsKey(HOODIE_AUTO_COMMIT_PROP),
+                HOODIE_AUTO_COMMIT_PROP, DEFAULT_HOODIE_AUTO_COMMIT);
 
 
             setDefaultOnCondition(props, !isIndexConfigSet, HoodieIndexConfig.newBuilder().build());

hoodie-client/src/test/java/com/uber/hoodie/TestHoodieClient.java

@@ -148,6 +148,35 @@ public class TestHoodieClient implements Serializable {
         assertTrue(result.size() == 25);
     }
 
+    @Test
+    public void testAutoCommit() throws Exception {
+        // Set autoCommit false
+        HoodieWriteConfig cfg = getConfigBuilder().withAutoCommit(false).build();
+        HoodieWriteClient client = new HoodieWriteClient(jsc, cfg);
+
+        String newCommitTime = "001";
+        List<HoodieRecord> records = dataGen.generateInserts(newCommitTime, 200);
+        JavaRDD<HoodieRecord> writeRecords = jsc.parallelize(records, 1);
+
+        JavaRDD<WriteStatus> result = client.insert(writeRecords, newCommitTime);
+
+        assertFalse("If Autocommit is false, then commit should not be made automatically",
+            HoodieTestUtils.doesCommitExist(basePath, newCommitTime));
+        assertTrue("Commit should succeed", client.commit(newCommitTime, result));
+        assertTrue("After explicit commit, commit file should be created",
+            HoodieTestUtils.doesCommitExist(basePath, newCommitTime));
+
+        newCommitTime = "002";
+        records = dataGen.generateUpdates(newCommitTime, 100);
+        JavaRDD<HoodieRecord> updateRecords = jsc.parallelize(records, 1);
+        result = client.upsert(writeRecords, newCommitTime);
+        assertFalse("If Autocommit is false, then commit should not be made automatically",
+            HoodieTestUtils.doesCommitExist(basePath, newCommitTime));
+        assertTrue("Commit should succeed", client.commit(newCommitTime, result));
+        assertTrue("After explicit commit, commit file should be created",
+            HoodieTestUtils.doesCommitExist(basePath, newCommitTime));
+    }
+
     @Test
     public void testUpserts() throws Exception {
         HoodieWriteConfig cfg = getConfig();
@@ -216,7 +245,6 @@ public class TestHoodieClient implements Serializable {
             readClient.readCommit(newCommitTime).count(),
             readClient.readSince("001").count());
     }
-
     @Test
     public void testInsertAndCleanByVersions() throws Exception {
         int maxVersions = 2; // keep upto 2 versions for each file
@@ -513,6 +541,8 @@ public class TestHoodieClient implements Serializable {
                 HoodieTestUtils.doesDataFileExist(basePath, "2016/05/06", commitTime1, file13));
     }
 
+
+
     @Test
     public void testSmallInsertHandling() throws Exception {