anoopsjohn commented on a change in pull request #1783:
URL: https://github.com/apache/hbase/pull/1783#discussion_r431063081



##########
File path: 
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HStore.java
##########
@@ -955,19 +964,24 @@ private void bulkLoadHFile(HStoreFile sf) throws 
IOException {
       if (!result.isEmpty()) {
         // initialize the thread pool for closing store files in parallel.
         ThreadPoolExecutor storeFileCloserThreadPool = this.region
-            .getStoreFileOpenAndCloseThreadPool("StoreFileCloser-"
-              + this.region.getRegionInfo().getEncodedName() + "-" + 
this.getColumnFamilyName());
-
+            .getStoreFileOpenAndCloseThreadPool();
+        String executingThreadNamePrefix = "StoreFileCloser-"
+          + this.region.getRegionInfo().getEncodedName() + "-" + 
this.getColumnFamilyName();
+        AtomicInteger threadId = new AtomicInteger(0);
         // close each store file in parallel
         CompletionService<Void> completionService =
           new ExecutorCompletionService<>(storeFileCloserThreadPool);
         for (HStoreFile f : result) {
           completionService.submit(new Callable<Void>() {
             @Override
             public Void call() throws IOException {
+              Thread t = Thread.currentThread();

Review comment:
       I dont think we should do these hacks.  The threads can be named with 
regionName and some seqNo.  Anyway even if we do these hacks and add the cf 
name, it says till that level only. Still from jstack we can not know which 
file open it is stuck with (if assume we took it when there was a stuck case).  
We can make sure we have proper log which says opening store file xxx for cf x 
and that log will have to say the thread name also.  So later with jstack and 
this log we can track down issues.  Sounds ok?




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