[GitHub] [hbase] 2005hithlj commented on a diff in pull request #4891: HBASE-27483 Expose table and region storefiles accessed days and size to the metrics

[GitBox]

2005hithlj commented on code in PR #4891:
URL: https://github.com/apache/hbase/pull/4891#discussion_r1055424594


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hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HStore.java:
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@@ -1780,6 +1781,29 @@ public OptionalDouble getAvgStoreFileAge() {
     return getStoreFileAgeStream().average();
   }
 
+  @Override
+  public Map<String, Pair<Long, Long>> getStoreFilesAccessTimeAndSize() {
+    Collection<HStoreFile> storeFiles = 
this.storeEngine.getStoreFileManager().getStorefiles();
+    Map<String, Pair<Long, Long>> sfAccessTimeAndSizeMap = new HashMap<>();
+    for (HStoreFile sf : storeFiles) {
+      if (sf.getReader() == null) {
+        continue;
+      }
+      FileStatus fileStatus;
+      try {
+        fileStatus = sf.getFileInfo().getFileStatus();

Review Comment:
   > If this FileStatus is cached, then the accessTime will not be updated?
   
   @Apache9 sir. Thanks for your review. 
   Yes, if FileStatus is cached, the accessTime will not be updated, but the 
current logic is got from the back-end file system in real time.



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