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https://issues.apache.org/jira/browse/BAHIR-202?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16799126#comment-16799126
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ASF GitHub Bot commented on BAHIR-202:
--------------------------------------
SuXingLee commented on pull request #50: [BAHIR-202] Improve KuduSink
throughput by using async FlushMode
URL: https://github.com/apache/bahir-flink/pull/50#discussion_r268228468
##########
File path:
flink-connector-kudu/src/main/java/org/apache/flink/streaming/connectors/kudu/KuduSink.java
##########
@@ -79,9 +86,12 @@ public KuduSink(String kuduMasters, KuduTableInfo
tableInfo, KuduSerialization<O
@Override
public void open(Configuration parameters) throws IOException {
- if (connector != null) return;
- connector = new KuduConnector(kuduMasters, tableInfo, consistency,
writeMode);
- serializer.withSchema(tableInfo.getSchema());
+ if (this.connector != null) return;
+ FlushMode flushMode = ((StreamingRuntimeContext)
getRuntimeContext()).isCheckpointingEnabled() ?
Review comment:
In some scenarios, the user does not care about the order, only cares about
the throughput. So we give different option to user.Now, the logic is :
- If flink checkpoint is disable,synchronously write data to kudu.
- If flink checkpoint is enable, asynchronously write data to kudu by
default.
- User also can change to sync by explicitly
calling```KuduSink.withSyncFlushMode()``` when initializing KuduSink.
The out-of-order tip is writed in ```KuduSink.withSyncFlushMode()```
comments, if someone want to orderly write data to kudu when checkpoint is
enable, he can explicitly calling```KuduSink.withSyncFlushMode()``` .
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> Improve KuduSink throughput by using async FlushMode
> ----------------------------------------------------
>
> Key: BAHIR-202
> URL: https://issues.apache.org/jira/browse/BAHIR-202
> Project: Bahir
> Issue Type: Improvement
> Components: Flink Streaming Connectors
> Affects Versions: Flink-1.0
> Reporter: Suxing Lee
> Priority: Major
> Fix For: Flink-Next
>
>
> Improve KuduSink throughput by using async FlushMode.
> And using checkpoint to ensure at-least-once in async flush mode.
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