diff --git a/constants.go b/constants.go
index b6c6136..75e4180 100644
--- a/constants.go
+++ b/constants.go
@@ -23,6 +23,7 @@ const (
 )
 
 const (
+	opError        = -1
 	opCreate       = 1
 	opDelete       = 2
 	opExists       = 3
diff --git a/encode.go b/encode.go
index 348c5aa..6324b31 100644
--- a/encode.go
+++ b/encode.go
@@ -329,6 +329,8 @@ func (r *MultiResponse) Encode(buf []byte) (int, error) {
 			n, err = encodePacketValue(buf[total:], reflect.ValueOf(op.String))
 		case opSetData:
 			n, err = encodePacketValue(buf[total:], reflect.ValueOf(op.Stat))
+		case opError:
+			n, err = encodePacketValue(buf[total:], reflect.ValueOf(&op.Header.Err))
 		}
 		total += n
 		if err != nil {
@@ -371,6 +373,8 @@ func (r *MultiResponse) Decode(buf []byte) (int, error) {
 			res.Stat = new(Stat)
 			w = reflect.ValueOf(res.Stat)
 		case opCheck, opDelete:
+		case opError:
+			w = reflect.ValueOf(&res.Header.Err)
 		}
 		if w.IsValid() {
 			n, err := decodePacketValue(buf[total:], w)
diff --git a/integration/docker_test.go b/integration/docker_test.go
index 52be0c6..2185e39 100644
--- a/integration/docker_test.go
+++ b/integration/docker_test.go
@@ -53,7 +53,7 @@ func NewContainer(containerName, dockerFile string, ports []string) (*Container,
 }
 
 func newContainerFiles(cfg ContainerConfig) (c *Container, err error) {
-	dc, err := docker.NewClient("unix://var/run/docker.sock")
+	dc, err := docker.NewClient("unix:///var/run/docker.sock")
 	if err != nil {
 		return nil, err
 	}
diff --git a/integration/drill/Dockerfile b/integration/drill/Dockerfile
index 4611246..db25fcb 100644
--- a/integration/drill/Dockerfile
+++ b/integration/drill/Dockerfile
@@ -1,12 +1,14 @@
 FROM java:openjdk-8-jdk
 # needs jdk to submit sql queries!?
 
+ENV DRILL_VERSION 1.15.0
+
 RUN	mkdir -p /opt/drill && \
-	wget -q -O - http://www-us.apache.org/dist/drill/drill-1.10.0/apache-drill-1.10.0.tar.gz | tar -zxvf  - -C /opt/drill
+	wget -q -O - http://www-us.apache.org/dist/drill/drill-${DRILL_VERSION}/apache-drill-${DRILL_VERSION}.tar.gz | tar -zxvf  - -C /opt/drill
 
 EXPOSE 8047
 
-ENV DRILL_HOME		/opt/drill/apache-drill-1.10.0
+ENV DRILL_HOME		/opt/drill/apache-drill-${DRILL_VERSION}
 ENV DRILL_LOG_DIR	${DRILL_HOME}/log/
 ENV DRILL_LOG_PREFIX	${DRILL_LOG_PATH}/drill
 
@@ -23,8 +25,8 @@ ENTRYPOINT ["java",\
 	"-Ddrill.exec.enable-epoll=false",\
 	"-XX:+CMSClassUnloadingEnabled",\
 	"-XX:+UseG1GC",\
-	"-Dlog.path=/opt/drill/apache-drill-1.10.0/log/drillbit.log",\
-	"-Dlog.query.path=/opt/drill/apache-drill-1.10.0/log/drillbit_queries.json",\
+	"-Dlog.path=/opt/drill/apache-drill-${DRILL_VERSION}/log/drillbit.log",\
+	"-Dlog.query.path=/opt/drill/apache-drill-${DRILL_VERSION}/log/drillbit_queries.json",\
 	"-cp",\
-	"/opt/drill/apache-drill-1.10.0/conf:/opt/drill/apache-drill-1.10.0/jars/*:/opt/drill/apache-drill-1.10.0/jars/ext/*:/opt/drill/apache-drill-1.10.0/jars/3rdparty/*:/opt/drill/apache-drill-1.10.0/jars/classb/*",\
+	"/opt/drill/apache-drill-${DRILL_VERSION}/conf:/opt/drill/apache-drill-${DRILL_VERSION}/jars/*:/opt/drill/apache-drill-${DRILL_VERSION}/jars/ext/*:/opt/drill/apache-drill-${DRILL_VERSION}/jars/3rdparty/*:/opt/drill/apache-drill-${DRILL_VERSION}/jars/classb/*",\
 	"org.apache.drill.exec.server.Drillbit"]
diff --git a/integration/integration_test.go b/integration/integration_test.go
index 0e2f686..c2f11da 100644
--- a/integration/integration_test.go
+++ b/integration/integration_test.go
@@ -15,7 +15,6 @@
 package integration
 
 import (
-	"net"
 	"testing"
 	"time"
 
@@ -557,26 +556,6 @@ func TestCreateInvalidPath(t *testing.T) {
 	})
 }
 
-func TestRUOK(t *testing.T) {
-	zkclus := newZKCluster(t)
-	defer zkclus.Close(t)
-
-	conn, err := net.Dial("tcp", zkclus.Addr())
-	if err != nil {
-		t.Fatal(err)
-	}
-	if _, err := conn.Write([]byte("ruok")); err != nil {
-		t.Fatal(err)
-	}
-	buf := make([]byte, 4)
-	if _, err := conn.Read(buf); err != nil {
-		t.Fatal(err)
-	}
-	if string(buf) != "imok" {
-		t.Fatalf(`expected "imok", got %q`, string(buf))
-	}
-}
-
 func TestMultiOp(t *testing.T) { runTest(t, testMultiOp) }
 
 func testMultiOp(t *testing.T, c *zk.Conn) {
@@ -626,8 +605,8 @@ func testMultiOp(t *testing.T, c *zk.Conn) {
 	ops = []interface{}{
 		&zk.CreateRequest{Path: "/foo", Data: []byte("foo"), Acl: acl},
 	}
-	if _, err := c.Multi(ops...); err == nil || err.Error() != zetcd.ErrAPIError.Error() {
-		t.Fatalf("expected %v, got %v", zetcd.ErrAPIError, err)
+	if _, err := c.Multi(ops...); err == nil || err.Error() != zetcd.ErrNodeExists.Error() {
+		t.Fatalf("expected %v, got %v", zetcd.ErrNodeExists, err)
 	}
 	// test create+delete on same key == no key
 	ops = []interface{}{
@@ -653,8 +632,8 @@ func testMultiOp(t *testing.T, c *zk.Conn) {
 		&zk.CheckVersionRequest{Path: "/foo", Version: 2},
 	}
 	_, err = c.Multi(ops...)
-	if err == nil || err.Error() != zetcd.ErrAPIError.Error() {
-		t.Fatalf("expected %v, got %v", zetcd.ErrAPIError, err)
+	if err == nil || err.Error() != zetcd.ErrBadVersion.Error() {
+		t.Fatalf("expected %v, got %v", zetcd.ErrBadVersion, err)
 	}
 	if _, s1, err = c.Get("/test1"); err == nil || err.Error() != zetcd.ErrNoNode.Error() {
 		t.Fatalf("expected %v, got (%v,%v)", zetcd.ErrNoNode, s1, err)
@@ -681,8 +660,8 @@ func testMultiOp(t *testing.T, c *zk.Conn) {
 	ops = []interface{}{
 		&zk.CheckVersionRequest{Path: "/missing-key", Version: 0},
 	}
-	if _, err = c.Multi(ops...); err == nil || err.Error() != zetcd.ErrAPIError.Error() {
-		t.Fatalf("expected %v, got %v", zetcd.ErrAPIError, err)
+	if _, err = c.Multi(ops...); err == nil || err.Error() != zetcd.ErrNoNode.Error() {
+		t.Fatalf("expected %v, got %v", zetcd.ErrNoNode, err)
 	}
 	// test empty operation list
 	if resp, err = c.Multi(); err != nil || len(resp) != 0 {
@@ -705,6 +684,23 @@ func testMultiOp(t *testing.T, c *zk.Conn) {
 	if s1.Mzxid != s2.Mzxid {
 		t.Fatalf("expected zxids in %+v to match %+v", *s1, *s2)
 	}
+	// test partial success
+	ops = []interface{}{
+		&zk.CheckVersionRequest{Path: "/test2", Version: 0},
+		&zk.CreateRequest{Path: "/foo", Data: []byte("foo"), Acl: acl},
+	}
+	if resp, err = c.Multi(ops...); err == nil || err.Error() != zetcd.ErrNodeExists.Error() {
+		t.Fatalf("expected %v, got %v", zetcd.ErrNodeExists, err)
+	}
+	if len(resp) != 2 {
+		t.Fatalf("expected %d results, got %d", 2, len(resp))
+	}
+	if resp[0].Error != nil {
+		t.Fatalf("expected checkop error to be nil, got %v", resp[0].Error)
+	}
+	if resp[1].Error == nil || resp[1].Error.Error() != zetcd.ErrNodeExists.Error() {
+		t.Fatalf("expected createop error to be %v, got %v", zetcd.ErrNodeExists.Error(), resp[1].Error)
+	}
 }
 
 func runTest(t *testing.T, f func(*testing.T, *zk.Conn)) {
diff --git a/integration/integration_zetcd_test.go b/integration/integration_zetcd_test.go
new file mode 100644
index 0000000..2c3b579
--- /dev/null
+++ b/integration/integration_zetcd_test.go
@@ -0,0 +1,28 @@
+// +build !zkdocker,!xchk
+
+package integration
+
+import (
+	"net"
+	"testing"
+)
+
+func TestRUOK(t *testing.T) {
+	zkclus := newZKCluster(t)
+	defer zkclus.Close(t)
+
+	conn, err := net.Dial("tcp", zkclus.Addr())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := conn.Write([]byte("ruok")); err != nil {
+		t.Fatal(err)
+	}
+	buf := make([]byte, 4)
+	if _, err := conn.Read(buf); err != nil {
+		t.Fatal(err)
+	}
+	if string(buf) != "imok" {
+		t.Fatalf(`expected "imok", got %q`, string(buf))
+	}
+}
diff --git a/integration/kafka/Dockerfile b/integration/kafka/Dockerfile
index c8fce83..232c445 100644
--- a/integration/kafka/Dockerfile
+++ b/integration/kafka/Dockerfile
@@ -8,7 +8,7 @@ RUN apt-get install -y wget supervisor dnsutils
 RUN rm -rf /var/lib/apt/lists/*; apt-get clean
 
 ENV SCALA_VERSION 2.11
-ENV KAFKA_VERSION 0.11.0.0
+ENV KAFKA_VERSION 0.11.0.3
 RUN wget -q http://www-us.apache.org/dist/kafka/"$KAFKA_VERSION"/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz -O /tmp/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz
 RUN tar xfz /tmp/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz -C /opt && rm /tmp/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION".tgz && mv /opt/kafka_"$SCALA_VERSION"-"$KAFKA_VERSION" /kafka
 # 9092 is kafka port
@@ -16,4 +16,5 @@ EXPOSE 9092
 
 COPY kafka/ /kafka/config/
 ADD kafka/run.sh /kafka/run.sh
+RUN chmod uga+x /kafka/run.sh
 ENTRYPOINT [ "/bin/bash", "/kafka/run.sh" ]
diff --git a/integration/kafka/kafka.chroot.properties b/integration/kafka/kafka.chroot.properties
index 38e923b..c5736c7 100644
--- a/integration/kafka/kafka.chroot.properties
+++ b/integration/kafka/kafka.chroot.properties
@@ -15,8 +15,7 @@ transaction.state.log.min.isr=1
 log.retention.hours=168
 log.segment.bytes=1073741824
 log.retention.check.interval.ms=300000
-# NOTE: assumes port 30001 for cross-checking configuration
-zookeeper.connect=172.17.0.1:30001/kafka-chroot
+zookeeper.connect=172.17.0.1:2181/kafka-chroot
 zookeeper.connection.timeout.ms=6000
 group.initial.rebalance.delay.ms=0
 auto.create.topics.enable=true
diff --git a/integration/kafka/kafka.server.properties b/integration/kafka/kafka.server.properties
index f8c1a0b..8b902f2 100644
--- a/integration/kafka/kafka.server.properties
+++ b/integration/kafka/kafka.server.properties
@@ -15,8 +15,7 @@ transaction.state.log.min.isr=1
 log.retention.hours=168
 log.segment.bytes=1073741824
 log.retention.check.interval.ms=300000
-# NOTE: assumes port 30001 for cross-checking configuration
-zookeeper.connect=172.17.0.1:30001
+zookeeper.connect=172.17.0.1:2181
 zookeeper.connection.timeout.ms=6000
 group.initial.rebalance.delay.ms=0
 auto.create.topics.enable=true
diff --git a/server.go b/server.go
index e079534..baba6af 100644
--- a/server.go
+++ b/server.go
@@ -76,7 +76,7 @@ func serveRequest(s Session, zke ZK, zkreq ZKRequest) error {
 	}
 	zkresp := DispatchZK(zke, zkreq.xid, zkreq.req)
 	if zkresp.Err != nil {
-		glog.V(9).Infof("dispatch error", zkresp.Err)
+		glog.V(9).Infof("dispatch error %v", zkresp.Err)
 		return zkresp.Err
 	}
 	if zkresp.Hdr.Err == 0 {
diff --git a/xchk/zk.go b/xchk/zk.go
index a9b7bce..4011c6f 100644
--- a/xchk/zk.go
+++ b/xchk/zk.go
@@ -245,7 +245,13 @@ func (xchk *zkXchk) GetChildren2(xid zetcd.Xid, op *zetcd.GetChildren2Request) z
 	return or
 }
 
-func (xchk *zkXchk) Multi(xid zetcd.Xid, op *zetcd.MultiRequest) zetcd.ZKResponse { panic("wut") }
+func (xchk *zkXchk) Multi(xid zetcd.Xid, op *zetcd.MultiRequest) zetcd.ZKResponse {
+	cf := func() zetcd.ZKResponse { return xchk.cZK.Multi(xid, op) }
+	of := func() zetcd.ZKResponse { return xchk.oZK.Multi(xid, op) }
+	cr, or, err := xchk.xchkResp(cf, of)
+	defer func() { xchk.reportErr(cr, or, err) }()
+	return or
+}
 
 func (xchk *zkXchk) Close(xid zetcd.Xid, op *zetcd.CloseRequest) zetcd.ZKResponse {
 	cf := func() zetcd.ZKResponse { return xchk.cZK.Close(xid, op) }
diff --git a/zketcd.go b/zketcd.go
index d396ac9..9f979c0 100644
--- a/zketcd.go
+++ b/zketcd.go
@@ -470,16 +470,31 @@ func (z *zkEtcd) Sync(xid Xid, op *SyncRequest) ZKResponse {
 
 func (z *zkEtcd) Multi(xid Xid, mreq *MultiRequest) ZKResponse {
 	bs := make([]opBundle, len(mreq.Ops))
+	mresp := &MultiResponse{
+		Ops:        make([]MultiResponseOp, len(mreq.Ops)),
+		DoneHeader: MultiHeader{Type: opMulti},
+	}
+	if len(mreq.Ops) == 0 {
+		zxid, zerr := z.incrementAndGetZxid()
+		if zerr != nil {
+			return mkErr(zerr)
+		}
+		return mkZKResp(xid, zxid, mresp)
+	}
 	for i, op := range mreq.Ops {
 		switch req := op.Op.(type) {
 		case *CreateRequest:
 			bs[i] = z.mkCreateTxnOp(req)
+			mresp.Ops[i].Header.Type = opCreate
 		case *DeleteRequest:
 			bs[i] = z.mkDeleteTxnOp(req)
+			mresp.Ops[i].Header.Type = opDelete
 		case *SetDataRequest:
 			bs[i] = z.mkSetDataTxnOp(req)
+			mresp.Ops[i].Header.Type = opSetData
 		case *CheckVersionRequest:
 			bs[i] = z.mkCheckVersionPathTxnOp(req)
+			mresp.Ops[i].Header.Type = opCheck
 		default:
 			panic(fmt.Sprintf("unknown multi %+v %T", op.Op, op.Op))
 		}
@@ -491,8 +506,13 @@ func (z *zkEtcd) Multi(xid Xid, mreq *MultiRequest) ZKResponse {
 	}
 
 	apply := func(s v3sync.STM) error {
-		for _, b := range bs {
+		for i, b := range bs {
 			if err := b.apply(s); err != nil {
+				var ok bool
+				mresp.Ops[i].Header.Type = opError
+				if mresp.Ops[i].Header.Err, ok = errorToErrCode[err]; !ok {
+					mresp.Ops[i].Header.Err = errAPIError
+				}
 				return err
 			}
 		}
@@ -500,52 +520,29 @@ func (z *zkEtcd) Multi(xid Xid, mreq *MultiRequest) ZKResponse {
 	}
 
 	reply := func(xid Xid, zxid ZXid) ZKResponse {
-		ops := make([]MultiResponseOp, len(bs))
 		for i, b := range bs {
 			resp := b.reply(xid, zxid)
-			ops[i].Header = MultiHeader{Err: 0}
 			switch r := resp.Resp.(type) {
 			case *CreateResponse:
-				ops[i].Header.Type = opCreate
-				ops[i].String = r.Path
+				mresp.Ops[i].String = r.Path
 			case *SetDataResponse:
-				ops[i].Header.Type = opSetData
-				ops[i].Stat = &r.Stat
-			case *DeleteResponse:
-				ops[i].Header.Type = opDelete
-			case *struct{}:
-				ops[i].Header.Type = opCheck
-			default:
-				panic(fmt.Sprintf("unknown multi %+v %T", resp, resp))
+				mresp.Ops[i].Stat = &r.Stat
 			}
 		}
-		mresp := &MultiResponse{
-			Ops:        ops,
-			DoneHeader: MultiHeader{Type: opMulti},
-		}
 		return mkZKResp(xid, zxid, mresp)
 	}
 
-	resp, err := z.doSTM(apply, prefetch...)
+	resp, _ := z.doSTM(apply, prefetch...)
 	if resp == nil {
-		// txn aborted, possibly due to any API error
-		if _, ok := errorToErrCode[err]; !ok {
-			// aborted due to non-API error
-			return mkErr(err)
-		}
 		zxid, zerr := z.incrementAndGetZxid()
 		if zerr != nil {
 			return mkErr(zerr)
 		}
-		// zkdocker seems to always return API error...
-		zkresp := apiErrToZKErr(xid, zxid, err)
-		zkresp.Hdr.Err = errAPIError
-		return zkresp
+		return reply(xid, zxid)
 	}
 
-	mresp := reply(xid, ZXid(resp.Header.Revision))
-	glog.V(7).Infof("Multi(%v) = (zxid=%v); txnresp: %+v", *mreq, resp.Header.Revision, *resp)
-	return mresp
+	glog.V(7).Infof("Multi(%v) = (zxid=%v); txnresp: %+v\n", *mreq, resp.Header.Revision, *resp)
+	return reply(xid, ZXid(resp.Header.Revision))
 }
 
 func (z *zkEtcd) mkCheckVersionPathTxnOp(op *CheckVersionRequest) opBundle {