diff --git a/docs/community.md b/docs/community.md
index 4f379f181..85729a6d5 100644
--- a/docs/community.md
+++ b/docs/community.md
@@ -13,4 +13,5 @@ issues or pull requests against this repo. Before you do so, please sign the
 Also, be sure to write unit tests for your bug fix or feature to show that it works as expected.
 
 If you want to participate in day-day conversations, please join our [slack group](https://hoodielib.slack.com/x-147852474016-157730502112/signup).
+If you are from select pre-listed email domains, you can self signup. Others, please add your email onto this [issue](https://github.com/uber/hoodie/issues/143)
 
diff --git a/hoodie-cli/src/main/java/com/uber/hoodie/cli/commands/RepairsCommand.java b/hoodie-cli/src/main/java/com/uber/hoodie/cli/commands/RepairsCommand.java
index a0b9810c0..e7998d9d8 100644
--- a/hoodie-cli/src/main/java/com/uber/hoodie/cli/commands/RepairsCommand.java
+++ b/hoodie-cli/src/main/java/com/uber/hoodie/cli/commands/RepairsCommand.java
@@ -50,11 +50,11 @@ public class RepairsCommand implements CommandMarker {
     @CliCommand(value = "repair deduplicate", help = "De-duplicate a partition path contains duplicates & produce repaired files to replace with")
     public String deduplicate(
             @CliOption(key = {
-                    "duplicatedPartitionPath"}, help = "Partition Path containing the duplicates")
+                    "duplicatedPartitionPath"}, help = "Partition Path containing the duplicates", mandatory = true)
             final String duplicatedPartitionPath,
-            @CliOption(key = {"repairedOutputPath"}, help = "Location to place the repaired files")
+            @CliOption(key = {"repairedOutputPath"}, help = "Location to place the repaired files", mandatory = true)
             final String repairedOutputPath,
-            @CliOption(key = {"sparkProperties"}, help = "Spark Properites File Path")
+            @CliOption(key = {"sparkProperties"}, help = "Spark Properites File Path", mandatory = true)
             final String sparkPropertiesPath) throws Exception {
         SparkLauncher sparkLauncher = SparkUtil.initLauncher(sparkPropertiesPath);
         sparkLauncher
diff --git a/hoodie-client/src/main/java/com/uber/hoodie/io/HoodieUpdateHandle.java b/hoodie-client/src/main/java/com/uber/hoodie/io/HoodieUpdateHandle.java
index 0c4b16498..9f7a1a825 100644
--- a/hoodie-client/src/main/java/com/uber/hoodie/io/HoodieUpdateHandle.java
+++ b/hoodie-client/src/main/java/com/uber/hoodie/io/HoodieUpdateHandle.java
@@ -88,7 +88,7 @@ public class HoodieUpdateHandle <T extends HoodieRecordPayload> extends HoodieIO
                                                        commitTime,
                                                        new Path(config.getBasePath()),
                                                        new Path(config.getBasePath(), record.getPartitionPath()));
-                                      partitionMetadata.trySave(TaskContext.getPartitionId());
+                    partitionMetadata.trySave(TaskContext.getPartitionId());
 
                     oldFilePath = new Path(
                         config.getBasePath() + "/" + record.getPartitionPath() + "/"
diff --git a/hoodie-common/src/main/java/com/uber/hoodie/common/model/HoodiePartitionMetadata.java b/hoodie-common/src/main/java/com/uber/hoodie/common/model/HoodiePartitionMetadata.java
index 68f3ec421..546253f3d 100644
--- a/hoodie-common/src/main/java/com/uber/hoodie/common/model/HoodiePartitionMetadata.java
+++ b/hoodie-common/src/main/java/com/uber/hoodie/common/model/HoodiePartitionMetadata.java
@@ -78,7 +78,9 @@ public class HoodiePartitionMetadata {
     }
 
     /**
-     * Write the metadata safely into partition
+     * Write the metadata safely into partition atomically.
+     *
+     * @param taskPartitionId
      */
     public void trySave(int taskPartitionId) {
         Path tmpMetaPath = new Path(partitionPath, HoodiePartitionMetadata.HOODIE_PARTITION_METAFILE + "_" + taskPartitionId);