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[GitHub] [carbondata] jackylk commented on a change in pull request #4010: [CARBONDATA-4050]Avoid redundant RPC calls to get file status when CarbonFile is instantiated with fileStatus constructor

Posted by GitBox on Nov 19, 2020; 6:23am
URL: http://apache-carbondata-dev-mailing-list-archive.168.s1.nabble.com/GitHub-carbondata-VenuReddy2103-opened-a-new-pull-request-4010-CARBONDATA-4050-Avoid-redundant-RPC-cr-tp103268p103278.html


jackylk commented on a change in pull request #4010:
URL: https://github.com/apache/carbondata/pull/4010#discussion_r526620493



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File path: core/src/main/java/org/apache/carbondata/core/datastore/filesystem/AbstractDFSCarbonFile.java
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@@ -541,7 +547,10 @@ public boolean createNewLockFile() throws IOException {
   @Override
   public String[] getLocations() throws IOException {
     BlockLocation[] blkLocations;
-    FileStatus fileStatus = fileSystem.getFileStatus(path);
+    FileStatus fileStatus = this.fileStatus;
+    if (fileStatus == null) {
+      fileStatus = fileSystem.getFileStatus(path);

Review comment:
       one file status is got, we can cache it in the class field member




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