zhouxinyu commented on a change in pull request #220: [ROCKETMQ-332]
MappedFileQueue#findMappedFileByOffset is not thread safe, which will cause
message loss.
URL: https://github.com/apache/rocketmq/pull/220#discussion_r162049616
##########
File path: store/src/main/java/org/apache/rocketmq/store/MappedFileQueue.java
##########
@@ -461,26 +461,38 @@ public boolean commit(final int commitLeastPages) {
*/
public MappedFile findMappedFileByOffset(final long offset, final boolean
returnFirstOnNotFound) {
try {
- MappedFile mappedFile = this.getFirstMappedFile();
- if (mappedFile != null) {
- int index = (int) ((offset / this.mappedFileSize) -
(mappedFile.getFileFromOffset() / this.mappedFileSize));
+ MappedFile firstMappedFile = this.getFirstMappedFile();
Review comment:
Thanks, I missed this case, please help review again -:)
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