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https://issues.apache.org/jira/browse/HDFS-16847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17637400#comment-17637400
]
ASF GitHub Bot commented on HDFS-16847:
---------------------------------------
omalley commented on code in PR #5145:
URL: https://github.com/apache/hadoop/pull/5145#discussion_r1029681091
##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/store/driver/impl/StateStoreFileBaseImpl.java:
##########
@@ -349,10 +350,12 @@ public <T extends BaseRecord> boolean putAll(
String recordPath = entry.getKey();
String recordPathTemp = recordPath + "." + now() + TMP_MARK;
BufferedWriter writer = getWriter(recordPathTemp);
Review Comment:
We could simplify the code a bit by making this a try with resources.
```
boolean recordWrittenSuccessfully = false;
try (BufferedWriter writer = getWriter(recordPathTemp)){
T record = entry.getValue();
String line = serializeString(record);
writer.write(line);
recordWrittenSuccessfully = true;
} catch (IOException e) {
LOG.error("Cannot write {}", recordPathTemp, e);
success = false;
}
```
> RBF: StateStore writer should not commit tmp fail if there was an error in
> writing the file.
> --------------------------------------------------------------------------------------------
>
> Key: HDFS-16847
> URL: https://issues.apache.org/jira/browse/HDFS-16847
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs, rbf
> Reporter: Simbarashe Dzinamarira
> Assignee: Simbarashe Dzinamarira
> Priority: Critical
> Labels: pull-request-available
>
> The file based implementation of the RBF state store has a commit step that
> moves a temporary file to a permanent location.
> There is a check to see if the write of the temp file was successfully,
> however, the code to commit doesn't check the success flag.
> This is the relevant code:
> [https://github.com/apache/hadoop/blob/7d39abd799a5f801a9fd07868a193205ab500bfa/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/store/driver/impl/StateStoreFileBaseImpl.java#L369]
>
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