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https://issues.apache.org/jira/browse/HDFS-16959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17702967#comment-17702967
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ASF GitHub Bot commented on HDFS-16959:
---------------------------------------
goiri commented on code in PR #5497:
URL: https://github.com/apache/hadoop/pull/5497#discussion_r1142801861
##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/store/CachedRecordStore.java:
##########
@@ -141,8 +142,9 @@ public boolean loadCache(boolean force) throws IOException {
// Update the metrics for the cache State Store size
StateStoreMetrics metrics = getDriver().getMetrics();
+ String recordName = getRecordClass().getSimpleName();
Review Comment:
Shouldn't this be inside of the null check?
##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/store/driver/TestStateStoreDriverBase.java:
##########
@@ -574,6 +578,15 @@ private static Map<String, Class<?>> getFields(BaseRecord
record) {
return getters;
}
+ public void testCacheLoadMetrics(StateStoreDriver driver, int numRefresh)
+ throws IOException, IllegalArgumentException {
+ StateStoreMetrics metrics = stateStore.getMetrics();
+ final Query<MountTable> query = new Query<>(MountTable.newInstance());
+ driver.getMultiple(MountTable.class, query);
+ assertEquals(numRefresh,
+
metrics.getCacheLoadMetrics().get("CacheMountTableLoad").lastStat().numSamples());
Review Comment:
Extract this a little.
Probably `metrics.getCacheLoadMetrics()` and the final value.
##########
hadoop-hdfs-project/hadoop-hdfs-rbf/src/test/java/org/apache/hadoop/hdfs/server/federation/store/driver/TestStateStoreDriverBase.java:
##########
@@ -574,6 +578,15 @@ private static Map<String, Class<?>> getFields(BaseRecord
record) {
return getters;
}
+ public void testCacheLoadMetrics(StateStoreDriver driver, int numRefresh)
+ throws IOException, IllegalArgumentException {
+ StateStoreMetrics metrics = stateStore.getMetrics();
+ final Query<MountTable> query = new Query<>(MountTable.newInstance());
+ driver.getMultiple(MountTable.class, query);
+ assertEquals(numRefresh,
Review Comment:
Can we check for NumOps and Time?
> RBF: state store cache loading metrics
> --------------------------------------
>
> Key: HDFS-16959
> URL: https://issues.apache.org/jira/browse/HDFS-16959
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Viraj Jasani
> Assignee: Viraj Jasani
> Priority: Major
> Labels: pull-request-available
>
> With increasing num of state store records (like mount points), it would be
> good to be able to get the cache loading metrics like avg time for cache load
> during refresh, num of times cache is loaded etc.
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