Example #1
0
    string OpDebug::report( const CurOp& curop ) const {
        StringBuilder s;
        if ( iscommand )
            s << "command ";
        else
            s << opToString( op ) << ' ';
        s << ns.toString();

        if ( ! query.isEmpty() ) {
            if ( iscommand )
                s << " command: ";
            else
                s << " query: ";
            s << query.toString();
        }
        
        if ( ! updateobj.isEmpty() ) {
            s << " update: ";
            updateobj.toString( s );
        }

        OPDEBUG_TOSTRING_HELP( cursorid );
        OPDEBUG_TOSTRING_HELP( ntoreturn );
        OPDEBUG_TOSTRING_HELP( ntoskip );
        OPDEBUG_TOSTRING_HELP_BOOL( exhaust );

        OPDEBUG_TOSTRING_HELP( nscanned );
        OPDEBUG_TOSTRING_HELP_BOOL( idhack );
        OPDEBUG_TOSTRING_HELP_BOOL( scanAndOrder );
        OPDEBUG_TOSTRING_HELP( nmoved );
        OPDEBUG_TOSTRING_HELP( nupdated );
        OPDEBUG_TOSTRING_HELP( ninserted );
        OPDEBUG_TOSTRING_HELP( ndeleted );
        OPDEBUG_TOSTRING_HELP_BOOL( fastmod );
        OPDEBUG_TOSTRING_HELP_BOOL( fastmodinsert );
        OPDEBUG_TOSTRING_HELP_BOOL( upsert );
        OPDEBUG_TOSTRING_HELP( keyUpdates );
        
        if ( extra.len() )
            s << " " << extra.str();

        if ( ! exceptionInfo.empty() ) {
            s << " exception: " << exceptionInfo.msg;
            if ( exceptionInfo.code )
                s << " code:" << exceptionInfo.code;
        }

        if ( curop.numYields() )
            s << " numYields: " << curop.numYields();
        
        s << " ";
        curop.lockStat().report( s );
        
        OPDEBUG_TOSTRING_HELP( nreturned );
        if ( responseLength > 0 )
            s << " reslen:" << responseLength;
        s << " " << executionTime << "ms";
        
        return s.str();
    }
Example #2
0
    void OpDebug::append(const CurOp& curop,
                         const SingleThreadedLockStats& lockStats,
                         BSONObjBuilder& b) const {

        const size_t maxElementSize = 50 * 1024;

        b.append( "op" , iscommand ? "command" : opToString( op ) );
        b.append( "ns" , ns.toString() );

        if (!query.isEmpty()) {
            appendAsObjOrString(iscommand ? "command" : "query", query, maxElementSize, &b);
        }
        else if (!iscommand && curop.haveQuery()) {
            appendAsObjOrString("query", curop.query(), maxElementSize, &b);
        }

        if (!updateobj.isEmpty()) {
            appendAsObjOrString("updateobj", updateobj, maxElementSize, &b);
        }

        const bool moved = (nmoved >= 1);

        OPDEBUG_APPEND_NUMBER( cursorid );
        OPDEBUG_APPEND_NUMBER( ntoreturn );
        OPDEBUG_APPEND_NUMBER( ntoskip );
        OPDEBUG_APPEND_BOOL( exhaust );

        OPDEBUG_APPEND_NUMBER( nscanned );
        OPDEBUG_APPEND_NUMBER( nscannedObjects );
        OPDEBUG_APPEND_BOOL( idhack );
        OPDEBUG_APPEND_BOOL( scanAndOrder );
        OPDEBUG_APPEND_BOOL( moved );
        OPDEBUG_APPEND_NUMBER( nmoved );
        OPDEBUG_APPEND_NUMBER( nMatched );
        OPDEBUG_APPEND_NUMBER( nModified );
        OPDEBUG_APPEND_NUMBER( ninserted );
        OPDEBUG_APPEND_NUMBER( ndeleted );
        OPDEBUG_APPEND_BOOL( fastmod );
        OPDEBUG_APPEND_BOOL( fastmodinsert );
        OPDEBUG_APPEND_BOOL( upsert );
        OPDEBUG_APPEND_BOOL( cursorExhausted );
        OPDEBUG_APPEND_NUMBER( keyUpdates );
        OPDEBUG_APPEND_NUMBER( writeConflicts );
        b.appendNumber("numYield", curop.numYields());

        {
            BSONObjBuilder locks(b.subobjStart("locks"));
            lockStats.report(&locks);
        }

        if (!exceptionInfo.empty()) {
            exceptionInfo.append(b, "exception", "exceptionCode");
        }

        OPDEBUG_APPEND_NUMBER( nreturned );
        OPDEBUG_APPEND_NUMBER( responseLength );
        b.append( "millis" , executionTime );

        execStats.append(b, "execStats");
    }
    void OpDebug::append( const CurOp& curop, BSONObjBuilder& b ) const {
        b.append( "op" , iscommand ? "command" : opToString( op ) );
        b.append( "ns" , ns.toString() );
        if ( ! query.isEmpty() )
            b.append( iscommand ? "command" : "query" , query );
        else if ( ! iscommand && curop.haveQuery() )
            curop.appendQuery( b , "query" );

        if ( ! updateobj.isEmpty() )
            b.append( "updateobj" , updateobj );
        
        const bool moved = (nmoved >= 1);

        OPDEBUG_APPEND_NUMBER( cursorid );
        OPDEBUG_APPEND_NUMBER( ntoreturn );
        OPDEBUG_APPEND_NUMBER( ntoskip );
        OPDEBUG_APPEND_BOOL( exhaust );

        OPDEBUG_APPEND_NUMBER( nscanned );
        OPDEBUG_APPEND_BOOL( idhack );
        OPDEBUG_APPEND_BOOL( scanAndOrder );
        OPDEBUG_APPEND_BOOL( moved );
        OPDEBUG_APPEND_NUMBER( nmoved );
        OPDEBUG_APPEND_NUMBER( nupdated );
        OPDEBUG_APPEND_BOOL( fastmod );
        OPDEBUG_APPEND_BOOL( fastmodinsert );
        OPDEBUG_APPEND_BOOL( upsert );
        OPDEBUG_APPEND_NUMBER( keyUpdates );

        b.appendNumber( "numYield" , curop.numYields() );
        b.append( "lockStats" , curop.lockStat().report() );
        
        if ( ! exceptionInfo.empty() ) 
            exceptionInfo.append( b , "exception" , "exceptionCode" );
        
        OPDEBUG_APPEND_NUMBER( nreturned );
        OPDEBUG_APPEND_NUMBER( responseLength );
        b.append( "millis" , executionTime );
        
    }
Example #4
0
void OpDebug::append(const CurOp& curop,
                     const SingleThreadedLockStats& lockStats,
                     BSONObjBuilder& b) const {
    const size_t maxElementSize = 50 * 1024;

    b.append("op", logicalOpToString(logicalOp));

    NamespaceString nss = NamespaceString(curop.getNS());
    b.append("ns", nss.ns());

    if (!iscommand && networkOp == dbQuery) {
        appendAsObjOrString(
            "query", upconvertQueryEntry(query, nss, ntoreturn, ntoskip), maxElementSize, &b);
    } else if (!iscommand && networkOp == dbGetMore) {
        appendAsObjOrString(
            "query", upconvertGetMoreEntry(nss, cursorid, ntoreturn), maxElementSize, &b);
    } else if (!query.isEmpty()) {
        const char* fieldName = (logicalOp == LogicalOp::opCommand) ? "command" : "query";
        appendAsObjOrString(fieldName, query, maxElementSize, &b);
    } else if (!iscommand && curop.haveQuery()) {
        appendAsObjOrString("query", curop.query(), maxElementSize, &b);
    }

    if (!updateobj.isEmpty()) {
        appendAsObjOrString("updateobj", updateobj, maxElementSize, &b);
    }

    OPDEBUG_APPEND_NUMBER(cursorid);
    OPDEBUG_APPEND_BOOL(exhaust);

    OPDEBUG_APPEND_NUMBER(keysExamined);
    OPDEBUG_APPEND_NUMBER(docsExamined);
    OPDEBUG_APPEND_BOOL(hasSortStage);
    OPDEBUG_APPEND_BOOL(fromMultiPlanner);
    OPDEBUG_APPEND_BOOL(replanned);
    OPDEBUG_APPEND_NUMBER(nMatched);
    OPDEBUG_APPEND_NUMBER(nModified);
    OPDEBUG_APPEND_NUMBER(ninserted);
    OPDEBUG_APPEND_NUMBER(ndeleted);
    OPDEBUG_APPEND_BOOL(fastmodinsert);
    OPDEBUG_APPEND_BOOL(upsert);
    OPDEBUG_APPEND_BOOL(cursorExhausted);

    if (nmoved > 0) {
        b.appendNumber("nmoved", nmoved);
    }

    if (keysInserted > 0) {
        b.appendNumber("keysInserted", keysInserted);
    }

    if (keysDeleted > 0) {
        b.appendNumber("keysDeleted", keysDeleted);
    }

    if (writeConflicts > 0) {
        b.appendNumber("writeConflicts", writeConflicts);
    }

    b.appendNumber("numYield", curop.numYields());

    {
        BSONObjBuilder locks(b.subobjStart("locks"));
        lockStats.report(&locks);
    }

    if (!exceptionInfo.empty()) {
        exceptionInfo.append(b, "exception", "exceptionCode");
    }

    OPDEBUG_APPEND_NUMBER(nreturned);
    OPDEBUG_APPEND_NUMBER(responseLength);
    if (iscommand) {
        b.append("protocol", getProtoString(networkOp));
    }
    b.append("millis", executionTime);

    if (!curop.getPlanSummary().empty()) {
        b.append("planSummary", curop.getPlanSummary());
    }

    if (execStats.have()) {
        execStats.append(b, "execStats");
    }
}
Example #5
0
string OpDebug::report(const CurOp& curop, const SingleThreadedLockStats& lockStats) const {
    StringBuilder s;
    if (iscommand)
        s << "command ";
    else
        s << networkOpToString(networkOp) << ' ';

    s << curop.getNS();

    if (!query.isEmpty()) {
        if (iscommand) {
            s << " command: ";

            Command* curCommand = curop.getCommand();
            if (curCommand) {
                mutablebson::Document cmdToLog(query, mutablebson::Document::kInPlaceDisabled);
                curCommand->redactForLogging(&cmdToLog);
                s << curCommand->getName() << " ";
                s << cmdToLog.toString();
            } else {  // Should not happen but we need to handle curCommand == NULL gracefully
                s << query.toString();
            }
        } else {
            s << " query: ";
            s << query.toString();
        }
    }

    if (!curop.getPlanSummary().empty()) {
        s << " planSummary: " << curop.getPlanSummary();
    }

    if (!updateobj.isEmpty()) {
        s << " update: ";
        updateobj.toString(s);
    }

    OPDEBUG_TOSTRING_HELP(cursorid);
    OPDEBUG_TOSTRING_HELP(ntoreturn);
    OPDEBUG_TOSTRING_HELP(ntoskip);
    OPDEBUG_TOSTRING_HELP_BOOL(exhaust);

    OPDEBUG_TOSTRING_HELP(keysExamined);
    OPDEBUG_TOSTRING_HELP(docsExamined);
    OPDEBUG_TOSTRING_HELP_BOOL(hasSortStage);
    OPDEBUG_TOSTRING_HELP_BOOL(fromMultiPlanner);
    OPDEBUG_TOSTRING_HELP_BOOL(replanned);
    OPDEBUG_TOSTRING_HELP(nMatched);
    OPDEBUG_TOSTRING_HELP(nModified);
    OPDEBUG_TOSTRING_HELP(ninserted);
    OPDEBUG_TOSTRING_HELP(ndeleted);
    OPDEBUG_TOSTRING_HELP_BOOL(fastmodinsert);
    OPDEBUG_TOSTRING_HELP_BOOL(upsert);
    OPDEBUG_TOSTRING_HELP_BOOL(cursorExhausted);

    if (nmoved > 0) {
        s << " nmoved:" << nmoved;
    }

    if (keysInserted > 0) {
        s << " keysInserted:" << keysInserted;
    }

    if (keysDeleted > 0) {
        s << " keysDeleted:" << keysDeleted;
    }

    if (writeConflicts > 0) {
        s << " writeConflicts:" << writeConflicts;
    }

    if (!exceptionInfo.empty()) {
        s << " exception: " << exceptionInfo.msg;
        if (exceptionInfo.code)
            s << " code:" << exceptionInfo.code;
    }

    s << " numYields:" << curop.numYields();

    OPDEBUG_TOSTRING_HELP(nreturned);
    if (responseLength > 0) {
        s << " reslen:" << responseLength;
    }

    {
        BSONObjBuilder locks;
        lockStats.report(&locks);
        s << " locks:" << locks.obj().toString();
    }

    if (iscommand) {
        s << " protocol:" << getProtoString(networkOp);
    }

    s << " " << executionTime << "ms";

    return s.str();
}
Example #6
0
    bool OpDebug::append(const CurOp& curop, BSONObjBuilder& b, size_t maxSize) const {
        b.append( "op" , iscommand ? "command" : opToString( op ) );
        b.append( "ns" , ns.toString() );
        
        int queryUpdateObjSize = 0;
        if (!query.isEmpty()) {
            queryUpdateObjSize += query.objsize();
        }
        else if (!iscommand && curop.haveQuery()) {
            queryUpdateObjSize += curop.query()["query"].size();
        }

        if (!updateobj.isEmpty()) {
            queryUpdateObjSize += updateobj.objsize();
        }

        if (static_cast<size_t>(queryUpdateObjSize) > maxSize) {
            if (!query.isEmpty()) {
                // Use 60 since BSONObj::toString can truncate strings into 150 chars
                // and we want to have enough room for both query and updateobj when
                // the entire document is going to be serialized into a string
                const string abbreviated(query.toString(false, false), 0, 60);
                b.append(iscommand ? "command" : "query", abbreviated + "...");
            }
            else if (!iscommand && curop.haveQuery()) {
                const string abbreviated(curop.query()["query"].toString(false, false), 0, 60);
                b.append("query", abbreviated + "...");
            }

            if (!updateobj.isEmpty()) {
                const string abbreviated(updateobj.toString(false, false), 0, 60);
                b.append("updateobj", abbreviated + "...");
            }

            return false;
        }

        if (!query.isEmpty()) {
            b.append(iscommand ? "command" : "query", query);
        }
        else if (!iscommand && curop.haveQuery()) {
            curop.appendQuery(b, "query");
        }

        if (!updateobj.isEmpty()) {
            b.append("updateobj", updateobj);
        }

        const bool moved = (nmoved >= 1);

        OPDEBUG_APPEND_NUMBER( cursorid );
        OPDEBUG_APPEND_NUMBER( ntoreturn );
        OPDEBUG_APPEND_NUMBER( ntoskip );
        OPDEBUG_APPEND_BOOL( exhaust );

        OPDEBUG_APPEND_NUMBER( nscanned );
        OPDEBUG_APPEND_BOOL( idhack );
        OPDEBUG_APPEND_BOOL( scanAndOrder );
        OPDEBUG_APPEND_BOOL( moved );
        OPDEBUG_APPEND_NUMBER( nmoved );
        OPDEBUG_APPEND_NUMBER( nMatched );
        OPDEBUG_APPEND_NUMBER( nModified );
        OPDEBUG_APPEND_NUMBER( ninserted );
        OPDEBUG_APPEND_NUMBER( ndeleted );
        OPDEBUG_APPEND_BOOL( fastmod );
        OPDEBUG_APPEND_BOOL( fastmodinsert );
        OPDEBUG_APPEND_BOOL( upsert );
        OPDEBUG_APPEND_NUMBER( keyUpdates );

        b.appendNumber( "numYield" , curop.numYields() );
        b.append( "lockStats" , curop.lockStat().report() );

        if ( ! exceptionInfo.empty() )
            exceptionInfo.append( b , "exception" , "exceptionCode" );

        OPDEBUG_APPEND_NUMBER( nreturned );
        OPDEBUG_APPEND_NUMBER( responseLength );
        b.append( "millis" , executionTime );

        execStats.append(b, "execStats");

        return true;
    }
Example #7
0
    string OpDebug::report( const CurOp& curop ) const {
        StringBuilder s;
        if ( iscommand )
            s << "command ";
        else
            s << opToString( op ) << ' ';
        s << ns.toString();

        if ( ! query.isEmpty() ) {
            if ( iscommand ) {
                s << " command: ";
                
                Command* curCommand = curop.getCommand();
                if (curCommand) {
                    mutablebson::Document cmdToLog(curop.query(), 
                            mutablebson::Document::kInPlaceDisabled);
                    curCommand->redactForLogging(&cmdToLog);
                    s << cmdToLog.toString();
                } 
                else { // Should not happen but we need to handle curCommand == NULL gracefully
                    s << query.toString();
                }
            }
            else {
                s << " query: ";
                s << query.toString();
            }
        }

        if (!planSummary.empty()) {
            s << " planSummary: " << planSummary.toString();
        }
        
        if ( ! updateobj.isEmpty() ) {
            s << " update: ";
            updateobj.toString( s );
        }

        OPDEBUG_TOSTRING_HELP( cursorid );
        OPDEBUG_TOSTRING_HELP( ntoreturn );
        OPDEBUG_TOSTRING_HELP( ntoskip );
        OPDEBUG_TOSTRING_HELP_BOOL( exhaust );

        OPDEBUG_TOSTRING_HELP( nscanned );
        OPDEBUG_TOSTRING_HELP_BOOL( idhack );
        OPDEBUG_TOSTRING_HELP_BOOL( scanAndOrder );
        OPDEBUG_TOSTRING_HELP( nmoved );
        OPDEBUG_TOSTRING_HELP( nMatched );
        OPDEBUG_TOSTRING_HELP( nModified );
        OPDEBUG_TOSTRING_HELP( ninserted );
        OPDEBUG_TOSTRING_HELP( ndeleted );
        OPDEBUG_TOSTRING_HELP_BOOL( fastmod );
        OPDEBUG_TOSTRING_HELP_BOOL( fastmodinsert );
        OPDEBUG_TOSTRING_HELP_BOOL( upsert );
        OPDEBUG_TOSTRING_HELP( keyUpdates );
        
        if ( extra.len() )
            s << " " << extra.str();

        if ( ! exceptionInfo.empty() ) {
            s << " exception: " << exceptionInfo.msg;
            if ( exceptionInfo.code )
                s << " code:" << exceptionInfo.code;
        }

        s << " numYields:" << curop.numYields();
        
        s << " ";
        curop.lockStat().report( s );
        
        OPDEBUG_TOSTRING_HELP( nreturned );
        if ( responseLength > 0 )
            s << " reslen:" << responseLength;
        s << " " << executionTime << "ms";
        
        return s.str();
    }
Example #8
0
    long long DeleteExecutor::execute(OperationContext* txn, Database* db) {
        uassertStatusOK(prepare());
        uassert(17417,
                mongoutils::str::stream() <<
                "DeleteExecutor::prepare() failed to parse query " << _request->getQuery(),
                _isQueryParsed);
        const bool logop = _request->shouldCallLogOp();
        const NamespaceString& ns(_request->getNamespaceString());
        if (!_request->isGod()) {
            if (ns.isSystem()) {
                uassert(12050,
                        "cannot delete from system namespace",
                        legalClientSystemNS(ns.ns(), true));
            }
            if (ns.ns().find('$') != string::npos) {
                log() << "cannot delete from collection with reserved $ in name: " << ns << endl;
                uasserted( 10100, "cannot delete from collection with reserved $ in name" );
            }
        }

        Collection* collection = db->getCollection(txn, ns.ns());
        if (NULL == collection) {
            return 0;
        }

        uassert(10101,
                str::stream() << "cannot remove from a capped collection: " << ns.ns(),
                !collection->isCapped());

        uassert(ErrorCodes::NotMaster,
                str::stream() << "Not primary while removing from " << ns.ns(),
                !logop || repl::isMasterNs(ns.ns().c_str()));

        long long nDeleted = 0;

        Runner* rawRunner;
        if (_canonicalQuery.get()) {
            uassertStatusOK(getRunner(collection, _canonicalQuery.release(), &rawRunner));
        }
        else {
            CanonicalQuery* ignored;
            uassertStatusOK(getRunner(collection,
                                      ns.ns(),
                                      _request->getQuery(),
                                      &rawRunner,
                                      &ignored));
        }

        auto_ptr<Runner> runner(rawRunner);
        ScopedRunnerRegistration safety(runner.get());

        DiskLoc rloc;
        Runner::RunnerState state;
        CurOp* curOp = txn->getCurOp();
        int oldYieldCount = curOp->numYields();
        while (Runner::RUNNER_ADVANCED == (state = runner->getNext(NULL, &rloc))) {
            if (oldYieldCount != curOp->numYields()) {
                uassert(ErrorCodes::NotMaster,
                        str::stream() << "No longer primary while removing from " << ns.ns(),
                        !logop || repl::isMasterNs(ns.ns().c_str()));
                oldYieldCount = curOp->numYields();
            }
            BSONObj toDelete;

            // TODO: do we want to buffer docs and delete them in a group rather than
            // saving/restoring state repeatedly?
            runner->saveState();
            collection->deleteDocument(txn, rloc, false, false, logop ? &toDelete : NULL );
            runner->restoreState(txn);

            nDeleted++;

            if (logop) {
                if ( toDelete.isEmpty() ) {
                    log() << "Deleted object without id in collection " << collection->ns()
                          << ", not logging.";
                }
                else {
                    bool replJustOne = true;
                    repl::logOp(txn, "d", ns.ns().c_str(), toDelete, 0, &replJustOne);
                }
            }

            if (!_request->isMulti()) {
                break;
            }

            if (!_request->isGod()) {
                txn->recoveryUnit()->commitIfNeeded();
            }

            if (debug && _request->isGod() && nDeleted == 100) {
                log() << "warning high number of deletes with god=true "
                      << " which could use significant memory b/c we don't commit journal";
            }
        }

        return nDeleted;
    }
Example #9
0
    long long DeleteExecutor::execute() {
        uassertStatusOK(prepare());
        uassert(17417,
                mongoutils::str::stream() <<
                "DeleteExecutor::prepare() failed to parse query " << _request->getQuery(),
                _isQueryParsed);
        const bool logop = _request->shouldCallLogOp();
        const NamespaceString& ns(_request->getNamespaceString());
        if (!_request->isGod()) {
            if (ns.isSystem()) {
                uassert(12050,
                        "cannot delete from system namespace",
                        legalClientSystemNS(ns.ns(), true));
            }
            if (ns.ns().find('$') != string::npos) {
                log() << "cannot delete from collection with reserved $ in name: " << ns << endl;
                uasserted( 10100, "cannot delete from collection with reserved $ in name" );
            }
        }

        massert(17418,
                mongoutils::str::stream() <<
                "dbname = " << currentClient.get()->database()->name() <<
                "; ns = " << ns.ns(),
                currentClient.get()->database()->name() == nsToDatabaseSubstring(ns.ns()));
        Collection* collection = currentClient.get()->database()->getCollection(ns.ns());
        if (NULL == collection) {
            return 0;
        }

        uassert(10101,
                str::stream() << "cannot remove from a capped collection: " << ns.ns(),
                !collection->isCapped());

        uassert(ErrorCodes::NotMaster,
                str::stream() << "Not primary while removing from " << ns.ns(),
                !logop || isMasterNs(ns.ns().c_str()));

        long long nDeleted = 0;

        const bool canYield = !_request->isGod() && (
                _canonicalQuery.get() ?
                !QueryPlannerCommon::hasNode(_canonicalQuery->root(), MatchExpression::ATOMIC) :
                LiteParsedQuery::isQueryIsolated(_request->getQuery()));

        Runner* rawRunner;
        if (_canonicalQuery.get()) {
            uassertStatusOK(getRunner(collection, _canonicalQuery.release(), &rawRunner));
        }
        else {
            CanonicalQuery* ignored;
            uassertStatusOK(getRunner(collection,
                                      ns.ns(),
                                      _request->getQuery(),
                                      &rawRunner,
                                      &ignored));
        }

        auto_ptr<Runner> runner(rawRunner);
        auto_ptr<ScopedRunnerRegistration> safety;

        if (canYield) {
            safety.reset(new ScopedRunnerRegistration(runner.get()));
            runner->setYieldPolicy(Runner::YIELD_AUTO);
        }

        DiskLoc rloc;
        Runner::RunnerState state;
        CurOp* curOp = cc().curop();
        int oldYieldCount = curOp->numYields();
        while (Runner::RUNNER_ADVANCED == (state = runner->getNext(NULL, &rloc))) {
            if (oldYieldCount != curOp->numYields()) {
                uassert(ErrorCodes::NotMaster,
                        str::stream() << "No longer primary while removing from " << ns.ns(),
                        !logop || isMasterNs(ns.ns().c_str()));
                oldYieldCount = curOp->numYields();
            }
            BSONObj toDelete;

            // TODO: do we want to buffer docs and delete them in a group rather than
            // saving/restoring state repeatedly?
            runner->saveState();
            collection->deleteDocument(rloc, false, false, logop ? &toDelete : NULL );
            runner->restoreState();

            nDeleted++;

            if (logop) {
                if ( toDelete.isEmpty() ) {
                    problem() << "deleted object without id, not logging" << endl;
                }
                else {
                    bool replJustOne = true;
                    logOp("d", ns.ns().c_str(), toDelete, 0, &replJustOne);
                }
            }

            if (!_request->isMulti()) {
                break;
            }

            if (!_request->isGod()) {
                getDur().commitIfNeeded();
            }

            if (debug && _request->isGod() && nDeleted == 100) {
                log() << "warning high number of deletes with god=true "
                      << " which could use significant memory b/c we don't commit journal";
            }
        }

        return nDeleted;
    }