RongtongJin commented on a change in pull request #1405: [ISSUE #1397]Add
abnormal recover for dleger modle
URL: https://github.com/apache/rocketmq/pull/1405#discussion_r317426574
##########
File path:
store/src/main/java/org/apache/rocketmq/store/dledger/DLedgerCommitLog.java
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@@ -261,24 +258,96 @@ private void recover(long maxPhyOffsetOfConsumeQueue) {
if (mappedFile != null) {
disableDeleteDledger();
}
- long maxPhyOffset = dLedgerFileList.getMaxWrotePosition();
+ List<MmapFile> mmapFiles = dLedgerFileList.getMappedFiles();
+ int index = mmapFiles.size() - 1;
+ MmapFile mmapFile = null;
+ for (; index >= 0; index--) {
+ mmapFile = mmapFiles.get(index);
+ if (isMappedFileMatchedRecover(mmapFile)) {
+ log.info("Recover from this dleger mapped file " +
mmapFile.getFileName());
+ break;
+ }
+ }
+ if (index < 0) {
+ index = 0;
+ mmapFile = mmapFiles.get(index);
+ }
+
+ ByteBuffer byteBuffer = mmapFile.sliceByteBuffer();
+ long processOffset = mmapFile.getFileFromOffset();
+ long mappedFileOffset = 0;
+ while (true) {
+ DispatchRequest dispatchRequest =
this.checkMessageAndReturnSize(byteBuffer, checkCRCOnRecover);
+ int size = dispatchRequest.getMsgSize();
Review comment:
This size does not contain dledger header, causing the processOffset to be
wrong. Maybe should add DLedgerEntry.BODY_OFFSET.
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