saintstack commented on a change in pull request #1825:
URL: https://github.com/apache/hbase/pull/1825#discussion_r435617884



##########
File path: 
hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WALSplitter.java
##########
@@ -285,23 +286,35 @@ boolean splitLogFile(FileStatus logfile, 
CancelableProgressable reporter) throws
         String encodedRegionNameAsStr = Bytes.toString(region);
         lastFlushedSequenceId = 
lastFlushedSequenceIds.get(encodedRegionNameAsStr);
         if (lastFlushedSequenceId == null) {
-          if (sequenceIdChecker != null) {
-            RegionStoreSequenceIds ids = 
sequenceIdChecker.getLastSequenceId(region);
-            Map<byte[], Long> maxSeqIdInStores = new 
TreeMap<>(Bytes.BYTES_COMPARATOR);
-            for (StoreSequenceId storeSeqId : ids.getStoreSequenceIdList()) {
-              maxSeqIdInStores.put(storeSeqId.getFamilyName().toByteArray(),
-                storeSeqId.getSequenceId());
+          if (!(isRegionDirPresentUnderRoot(entry.getKey().getTableName(), 
encodedRegionNameAsStr))) {
+            // The region directory itself is not present in the FS. This 
indicates that
+            // the region/table is already removed. We can just skip all the 
edits for this
+            // region. Setting lastFlushedSequenceId as Long.MAX_VALUE so that 
all edits
+            // will get skipped by the seqId check below.
+            // See more details at 
https://issues.apache.org/jira/browse/HBASE-24189
+            LOG.debug(
+                "Region {} seems not available in the FS. Just skipping all 
edits for this region",
+                encodedRegionNameAsStr);
+            lastFlushedSequenceId = Long.MAX_VALUE;

Review comment:
       You have a point @bsglz 




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