sig.validateStorageInfo(checkpointImage);
// error simulation code for junit test
CheckpointFaultInjector.getInstance().afterSecondaryCallsRollEditLog();
RemoteEditLogManifest manifest =
namenode.getEditLogManifest(sig.mostRecentCheckpointTxId + 1);
loadImage |= downloadCheckpointFiles(
fsName, checkpointImage, sig, manifest); // Fetch fsimage and edits
doMerge(sig, manifest, loadImage, checkpointImage, namesystem);