danny0405 commented on code in PR #17517:
URL: https://github.com/apache/hudi/pull/17517#discussion_r2719437743
##########
hudi-hadoop-common/src/main/java/org/apache/hudi/common/table/log/HoodieLogFormatWriter.java:
##########
@@ -244,21 +250,28 @@ public void close() throws IOException {
private void closeStream() throws IOException {
if (output != null) {
- flush();
+ // Call flush and `FSDataOutputStream#hsync` to persist all the data to
DataNodes
+ flush(true);
output.close();
output = null;
closed = true;
}
}
private void flush() throws IOException {
+ flush(syncDuringFlush);
+ }
+
+ private void flush(boolean sync) throws IOException {
if (output == null) {
return; // Presume closed
}
output.flush();
- // NOTE : the following API call makes sure that the data is flushed to
disk on DataNodes (akin to POSIX fsync())
- // See more details here : https://issues.apache.org/jira/browse/HDFS-744
- output.hsync();
+ if (sync) {
+ // NOTE : the following API call makes sure that the data is flushed to
disk on DataNodes (akin to POSIX fsync())
+ // See more details here : https://issues.apache.org/jira/browse/HDFS-744
+ output.hsync();
Review Comment:
cc @balaji-varadarajan-ai again for the review
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