EDITED 2019-02-08

`maxTxFee` is a global variable, used by both the raw transaction and wallet RPCs. It's set from `-maxtxfee`.

~listed in the global help text in init.cpp, but is only set in `WalletInit::ParameterInteraction()`. If the wallet is disabled, then `-maxtxfee` is ignored and the default is used.~

~This behaviour has existed since the mempool was changed to limit acceptance based on `maxTxFee` in https://github.com/bitcoin/bitcoin/commit/fa331db68bcc68e4c93fb45aaa30f911b0ecfe1a.~

~Short-term fix is to move the `-maxtxfee` handling to `InitParameterInteraction()` in init.cpp.~
EDIT: `maxTxFee` initiation bug fixed in #15357 

I don't think we should share this setting between the node and wallet.
remove(item.second);
    }
}
static void ThreadImport(std::vector<fs::path> vImportFiles)
{
    const CChainParams& chainparams = Params();
    RenameThread("bitcoin-loadblk");
    ScheduleBatchPriority();
    {
    CImportingNow imp;
    
    if (fReindex) {
        int nFile = 0;
        while (true) {
            CDiskBlockPos pos(nFile, 0);
            if (!fs::exists(GetBlockPosFilename(pos, "blk")))
                break; 
            FILE *file = OpenBlockFile(pos, true);
            if (!file)
                break; 
            LogPrintf("Reindexing block file blk%05u.dat...\n", (unsigned int)nFile);
            LoadExternalBlockFile(chainparams, file, &pos);
            nFile++;
        }
        pblocktree->WriteReindexing(false);
        fReindex = false;
        LogPrintf("Reindexing finished\n");
        
        LoadGenesisBlock(chainparams);
    }