Error while building master-branch: MatrixFactorizationModel.scala:19: object r is not a member of package tachyon

[zarzen]

Hi,
I am building master branch. I have installed tachyon using install_tachyon.sh. While building velox-modelserver with command mvn package it raises a lot of errors related to one class, ClientStore, which imported through import tachyon.r.sorted.ClientStore.
Here is the errors:

[ERROR] import tachyon.r.sorted.{ClientStore,Utils}
[ERROR]                ^
[ERROR] /home/zarzen/velox-modelserver/veloxms-core/src/main/scala/edu/berkeley/veloxms/VeloxApplication.scala:11: object r is not a member of package tachyon
[ERROR] import tachyon.r.sorted.ClientStore
[ERROR]                ^
[ERROR] /home/zarzen/velox-modelserver/veloxms-core/src/main/scala/edu/berkeley/veloxms/storage/TachyonStorage.scala:6: object r is not a member of package tachyon
[ERROR] import tachyon.r.sorted.ClientStore
[ERROR]                ^
[ERROR] /home/zarzen/velox-modelserver/veloxms-core/src/main/scala/edu/berkeley/veloxms/storage/TachyonStorage.scala:132: not found: type ClientStore
[ERROR]     def getStore(tachyon: String, kvloc: String): Try[ClientStore] = {
[ERROR]                                                       ^
[ERROR] /home/zarzen/velox-modelserver/veloxms-core/src/main/scala/edu/berkeley/veloxms/storage/TachyonStorage.scala:24: not found: type ClientStore
[ERROR]     users: ClientStore,
[ERROR]            ^
[ERROR] /home/zarzen/velox-modelserver/veloxms-core/src/main/scala/edu/berkeley/veloxms/storage/TachyonStorage.scala:25: not found: type ClientStore
[ERROR]     items: ClientStore,
[ERROR]            ^
[ERROR] /home/zarzen/velox-modelserver/veloxms-core/src/main/scala/edu/berkeley/veloxms/storage/TachyonStorage.scala:26: not found: type ClientStore
[ERROR]     ratings: ClientStore,
[ERROR]              ^
[ERROR] /home/zarzen/velox-modelserver/veloxms-core/src/main/scala/edu/berkeley/veloxms/misc/WriteModels.scala:8: object r is not a member of package tachyon
[ERROR] import tachyon.r.sorted.ClientStore
[ERROR]                ^
[ERROR] /home/zarzen/velox-modelserver/veloxms-core/src/main/scala/edu/berkeley/veloxms/misc/WriteModels.scala:9: object r is not a member of package tachyon
[ERROR] import tachyon.r.sorted.{Utils => TUtils}
[ERROR]                ^
[ERROR] /home/zarzen/velox-modelserver/veloxms-core/src/main/scala/edu/berkeley/veloxms/misc/WriteModels.scala:22: object r is not a member of package tachyon
[ERROR] import tachyon.r.sorted.ClientStore
[ERROR]                ^
[ERROR] /home/zarzen/velox-modelserver/veloxms-core/src/main/scala/edu/berkeley/veloxms/misc/WriteModels.scala:132: not found: value ClientStore
[ERROR]     val store = ClientStore.createStore(new TachyonURI(loc))
[ERROR]                 ^
[ERROR] /home/zarzen/velox-modelserver/veloxms-core/src/main/scala/edu/berkeley/veloxms/misc/WriteModels.scala:179: not found: value TUtils
[ERROR]   def compare(a: Array[Byte], b: Array[Byte]) = TUtils.compare(a, b)
[ERROR]                                                 ^
[ERROR] /home/zarzen/velox-modelserver/veloxms-core/src/main/scala/edu/berkeley/veloxms/storage/TachyonStorage.scala:134: not found: value ClientStore
[ERROR]         Try(ClientStore.getStore(new TachyonURI(url))) match {
[ERROR]             ^
[ERROR] /home/zarzen/velox-modelserver/veloxms-core/src/main/scala/edu/berkeley/veloxms/storage/TachyonStorage.scala:135: not found: type ClientStore
[ERROR]             case f: Failure[ClientStore] => f
[ERROR]                             ^
[ERROR] 14 errors found

I am confused that tachyon doesn't contain package r.sorted and I haven't found type ClientStore either in project tachyon or velox-modelserver.

System version: Ubuntu 14.04
Maven: 3.0.5
Java: 1.7