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getMinGenerationForSeqNo should acquire read lock #29126

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Original file line number Diff line number Diff line change
Expand Up @@ -1515,7 +1515,7 @@ public static void writeOperationNoSize(BufferedChecksumStreamOutput out, Transl
* @return the minimum generation for the sequence number
*/
public TranslogGeneration getMinGenerationForSeqNo(final long seqNo) {
try (ReleasableLock ignored = writeLock.acquire()) {
try (ReleasableLock ignored = readLock.acquire()) {
/*
* When flushing, the engine will ask the translog for the minimum generation that could contain any sequence number after the
* local checkpoint. Immediately after flushing, there will be no such generation, so this minimum generation in this case will
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