Major - P3 global snapshot find and aggregate intermittently fails with SnapshotTooOld error even with retries, This indicates that the snapshot window is just too short.
assert.soon(() => {
const res = sessionDb.runCommand(cmdObj);
if (!res.ok) {
assert(res.code === ErrorCodes.SnapshotTooOld ||
res.code === ErrorCodes.TransactionAborted,
"expected command to fail with SnapshotTooOld or TransactionAborted, cmd: "
tojson(cmdObj) + ", result: " + tojson(res));
print("Retrying because of SnapshotTooOld or TransactionAborted error.");
txnNumber++;
cmdObj.txnNumber = NumberLong(txnNumber);
return false;
}
assert.commandWorked(res, "expected command to succeed, cmd: " + tojson(cmdObj));
return true;
});
Thnis is a test case where cmd is any mongos find or aggregate commands with readConcern:
{snapshot: true}