MongoDB waiting for replication timed out

1. 问题描述
   三台 Windows Server 2012 R2 安装 MongoDB 3.0.8 做复制集，批量upsert有时报 “waiting for replication timed out（64）：stdClass::__set_state(array('wtimeout' => true,))” 错误。

2. 相关代码

$mongoManager = new MongoDB\Driver\Manager( 'mongodb://test:test123@192.168.100.101:27017,192.168.100.102:27017,192.168.100.103:27017/test' );
$mongoWriteConcern = new MongoDB\Driver\WriteConcern( MongoDB\Driver\WriteConcern :: MAJORITY, 1000 );

$bulk = new MongoDB\Driver\BulkWrite();

foreach( $data as $i ) {
    $i = (array)$i;
    $bulk->update( array('unique' => $i['unique']), array('$set' => $i), array('upsert' => true, 'multi' => true) );
}

try {
    $mongoResult = $mongoManager->executeBulkWrite( 'test.data', $bulk, $mongoWriteConcern );
} catch ( MongoDB\Driver\Exception\BulkWriteException $e ) {
    $mongoResult = $e->getWriteResult();

    // Check if the write concern could not be fulfilled
    if ( $writeConcernError = $mongoResult->getWriteConcernError() ) {
        printf( "%s（%d）：%s\n",
            $writeConcernError->getMessage(),
            $writeConcernError->getCode(),
            var_export( $writeConcernError->getInfo(), true )
        );
    }

    // Check if any write operations did not complete at all
    foreach ( $mongoResult->getWriteErrors() as $writeError ) {
        printf( "Write #%d：%s（%d）\n",
            $writeError->getIndex(),
            $writeError->getMessage(),
            $writeError->getCode()
        );
    }
} catch ( MongoDB\Driver\Exception\Exception $e ) {
    printf( "Other errors：%s\n", $e->getMessage() );
}

1. 报错信息

waiting for replication timed out（64）：stdClass::__set_state(array(
'wtimeout' => true,
))

1. 复制集信息

test:PRIMARY> rs.status()
{
        "set" : "test",
        "date" : ISODate("2016-01-19T01:01:09.279Z"),
        "myState" : 1,
        "members" : [
                {
                        "_id" : 0,
                        "name" : "192.168.100.101:27017",
                        "health" : 1,
                        "state" : 1,
                        "stateStr" : "PRIMARY",
                        "uptime" : 57786,
                        "optime" : Timestamp(1453165025, 125),
                        "optimeDate" : ISODate("2016-01-19T00:57:05Z"),
                        "electionTime" : Timestamp(1453108221, 1),
                        "electionDate" : ISODate("2016-01-18T09:10:21Z"),
                        "configVersion" : 2,
                        "self" : true
                },
                {
                        "_id" : 1,
                        "name" : "192.168.100.102:27017",
                        "health" : 1,
                        "state" : 2,
                        "stateStr" : "SECONDARY",
                        "uptime" : 56945,
                        "optime" : Timestamp(1453165025, 125),
                        "optimeDate" : ISODate("2016-01-19T00:57:05Z"),
                        "lastHeartbeat" : ISODate("2016-01-19T01:01:07.726Z"),
                        "lastHeartbeatRecv" : ISODate("2016-01-19T01:01:08.781Z"),
                        "pingMs" : 1,
                        "syncingTo" : "192.168.100.101:27017",
                        "configVersion" : 2
                },
                {
                        "_id" : 2,
                        "name" : "192.168.100.103:27017",
                        "health" : 1,
                        "state" : 2,
                        "stateStr" : "SECONDARY",
                        "uptime" : 56018,
                        "optime" : Timestamp(1453165025, 125),
                        "optimeDate" : ISODate("2016-01-19T00:57:05Z"),
                        "lastHeartbeat" : ISODate("2016-01-19T01:01:07.847Z"),
                        "lastHeartbeatRecv" : ISODate("2016-01-19T01:01:07.581Z"),
                        "pingMs" : 1,
                        "syncingTo" : "192.168.100.101:27017",
                        "configVersion" : 2
                }
        ],
        "ok" : 1
}