Merge branch 'devel' of https://github.com/arangodb/arangodb into devel

CHANGELOG

@@ -33,6 +33,8 @@ devel
 * added distinction between hasUser and authorized within Foxx
   (cluster internal requests are authorized requests but don't have a user)
 
+* arangoimp now has a `--threads` option to enable parallel imports of data
+
 
 v3.2.alpha4 (2017-04-25)
 ------------------------

Documentation/Books/Manual/Administration/Arangoimp.md

@@ -92,6 +92,17 @@ Please note that by default, _arangoimp_ will import data into the specified
 collection in the default database (*_system*). To specify a different database, 
 use the *--server.database* option when invoking _arangoimp_. 
 
+The tool also supports parallel imports, with multiple threads. Using multiple
+threads may provide a speedup, especially when using the RocksDB storage engine.
+To specify the number of parallel threads use the `--threads` option:
+
+    > arangoimp --threads 4 --file "data.json" --type json --collection "users"
+
+Note that using multiple threads may lead to a non-sequential import of the input
+data. Data that appears later in the input file may be imported earlier than data
+that appears earlier in the input file. This is normally not a problem but may cause
+issues when when there are data dependencies or duplicates in the import data. In
+this case, the number of threads should be set to 1.
 
 ### JSON input file formats
 

Documentation/Books/Manual/ReleaseNotes/NewFeatures32.md

@@ -250,9 +250,18 @@ Foxx
   uploaded file will be used as the service's main entry point.
 
 
-Pregel
+Distributed Graph Processing
 ------
 
+* We added support for executing distributed graph algorithms aka `Pregel`. 
+* Users can run arbitrary algorithms on an entire graph, including in cluster mode.
+* We implemented a number of algorithms for various well-known graph measures:
+  * Connected Components
+  * PageRank
+  * Shortest Paths
+  * Centrality Measures (Centrality and Betweeness)
+  * Community Detection (via Label Propagation, Speakers-Listeners Label Propagation or DMID)
+* Users can contribute their own algorithms
 
 AQL
 ---
@@ -344,6 +353,8 @@ Client tools
 
   `--translate` works for CSV and TSV inputs only.
 
+* added `--threads` option to arangoimp to specify the number of parallel import threads 
+
 * changed default value for client tools option `--server.max-packet-size` from 128 MB 
   to 256 MB. this allows transferring bigger result sets from the server without the
   client tools rejecting them as invalid.

arangod/RocksDBEngine/RocksDBCommon.h

@@ -78,6 +78,61 @@ class Methods;
 }
 namespace rocksutils {
 
+//// to persistent
+template <typename T>
+typename std::enable_if<std::is_integral<T>::value,void>::type
+toPersistent(T in, char*& out){
+  using TT = typename std::decay<T>::type;
+  std::memcpy(out, &in, sizeof(TT));
+  out += sizeof(TT);
+}
+
+//// from persistent
+template <typename T,
+          typename std::enable_if<std::is_integral<typename std::remove_reference<T>::type>::value, int>::type = 0
+         >
+typename std::decay<T>::type fromPersistent(char const*& in){
+  using TT = typename std::decay<T>::type;
+  TT out;
+  std::memcpy(&out, in, sizeof(TT));
+  in += sizeof(TT);
+  return out;
+}
+
+//we need this overload or the template will match
+template <typename T,
+          typename std::enable_if<std::is_integral<typename std::remove_reference<T>::type>::value, int>::type = 1
+         >
+typename std::decay<T>::type fromPersistent(char *& in){
+  using TT = typename std::decay<T>::type;
+  TT out;
+  std::memcpy(&out, in, sizeof(TT));
+  in += sizeof(TT);
+  return out;
+}
+
+template <typename T, typename StringLike,
+          typename std::enable_if<std::is_integral<typename std::remove_reference<T>::type>::value, int>::type = 2
+         >
+typename std::decay<T>::type fromPersistent(StringLike& in){
+  using TT = typename std::decay<T>::type;
+  TT out;
+  std::memcpy(&out, in.data(), sizeof(TT));
+  return out;
+}
+
+inline uint64_t doubleToInt(double d){
+  uint64_t i;
+  std::memcpy(&i, &d, sizeof(i));
+  return i;
+}
+
+inline double intToDouble(uint64_t i){
+  double d;
+  std::memcpy(&d, &i, sizeof(i));
+  return d;
+}
+
 uint64_t uint64FromPersistent(char const* p);
 void uint64ToPersistent(char* p, uint64_t value);
 void uint64ToPersistent(std::string& out, uint64_t value);

arangod/RocksDBEngine/RocksDBGeoIndex.h

@@ -33,6 +33,7 @@
 
 #include <velocypack/Builder.h>
 #include <velocypack/velocypack-aliases.h>
+#include <type_traits>
 
 namespace arangodb {
 

arangod/RocksDBEngine/RocksDBGeoIndexImpl.cpp

@@ -99,14 +99,14 @@ typedef struct {
 /* only used for a leaf pot.                           */
 /* =================================================== */
 typedef struct {
-  int LorLeaf;
+  int32_t LorLeaf;
-  int RorPoints;
+  int32_t RorPoints;
   GeoString middle;
   GeoFix maxdist[GeoIndexFIXEDPOINTS];
   GeoString start;
   GeoString end;
-  int level;
+  int32_t level;
-  int points[GeoIndexPOTSIZE];
+  int32_t points[GeoIndexPOTSIZE];
 } GeoPot;
 /* =================================================== */
 /*                 GeoIx structure                     */
@@ -267,6 +267,74 @@ typedef struct {
 
 namespace arangodb { namespace rocksdbengine {
 
+static GeoCoordinate& fromPersistent(char const* in, GeoCoordinate& out){
+  const char* start = in;
+
+  //convert latituide and longitute to uint64 for network transfer / storage
+  uint64_t fromStorage = rocksutils::fromPersistent<uint64_t>(start);
+  out.latitude = rocksutils::intToDouble(fromStorage);
+
+  fromStorage = rocksutils::fromPersistent<uint64_t>(start);
+  out.longitude = rocksutils::intToDouble(fromStorage);
+
+  out.data = rocksutils::fromPersistent<uint64_t>(start);
+
+  return out;
+}
+
+static void toPersistent(GeoCoordinate& in, char* out){
+  char* start = out;
+
+  uint64_t toStorage = rocksutils::doubleToInt(in.latitude);
+  rocksutils::toPersistent(toStorage, start);
+
+  toStorage = rocksutils::doubleToInt(in.longitude);
+  rocksutils::toPersistent(toStorage, start);
+
+  rocksutils::toPersistent(in.data, start);
+}
+
+static GeoPot& fromPersistent(char const* in, GeoPot& out){
+  const char* start = in;
+
+  out.LorLeaf = rocksutils::fromPersistent<int32_t>(start);
+  out.RorPoints = rocksutils::fromPersistent<int32_t>(start);
+  out.middle = rocksutils::fromPersistent<GeoString>(start);
+
+  for(std::size_t i = 0; i < GeoIndexFIXEDPOINTS; i++){
+    out.maxdist[i] = rocksutils::fromPersistent<GeoFix>(start);
+  }
+
+  out.start = rocksutils::fromPersistent<GeoString>(start);
+  out.end = rocksutils::fromPersistent<GeoString>(start);
+  out.level = rocksutils::fromPersistent<int32_t>(start);
+
+  for(std::size_t i = 0; i < GeoIndexFIXEDPOINTS; i++){
+    out.points[i] = rocksutils::fromPersistent<int32_t>(start);
+  }
+
+  return out;
+}
+
+static void toPersistent(GeoPot const& in, char* out){
+  char* start = out;
+
+  rocksutils::toPersistent(in.LorLeaf, start);
+  rocksutils::toPersistent(in.RorPoints, start);
+  rocksutils::toPersistent(in.middle, start);
+
+  for(std::size_t i = 0; i< GeoIndexFIXEDPOINTS; i++){
+    rocksutils::toPersistent(in.maxdist[i], start);
+  }
+
+  rocksutils::toPersistent(in.start, start);
+  rocksutils::toPersistent(in.end, start);
+  rocksutils::toPersistent(in.level, start);
+
+  for(std::size_t i = 0; i< GeoIndexFIXEDPOINTS; i++){
+    rocksutils::toPersistent(in.points[i], start);
+  }
+}
 
 /* CRUD interface */
 
@@ -322,13 +390,17 @@ void SlotRead(GeoIx * gix, int slot, GeoCoordinate * gc /*out param*/)
   RocksDBKey key = RocksDBKey::GeoIndexValue(gix->objectId, slot, true);
   std::string slotValue;
   RocksRead(gix, key, &slotValue);
-  memcpy(gc, slotValue.data(), slotValue.size());
+  fromPersistent(slotValue.data(),*gc);
 }
 void SlotWrite(GeoIx * gix,int slot, GeoCoordinate * gc)
 {
   RocksDBKey key = RocksDBKey::GeoIndexValue(gix->objectId, slot, true);
-  RocksWrite(gix, key, rocksdb::Slice((char*)gc,
+  char data[sizeof (GeoCoordinate)];
-                                      sizeof(GeoCoordinate)));
+  toPersistent(*gc, &data[0]);
+  RocksWrite(gix, key, rocksdb::Slice(&data[0], sizeof(GeoCoordinate)));
+
+  GeoCoordinate test;
+  fromPersistent(&data[0],test);
 }
 
 void PotRead(GeoIx * gix, int pot, GeoPot * gp)
@@ -336,12 +408,15 @@ void PotRead(GeoIx * gix, int pot, GeoPot * gp)
   RocksDBKey key = RocksDBKey::GeoIndexValue(gix->objectId, pot, false);
   std::string potValue;
   RocksRead(gix, key, &potValue);
-  memcpy(gp, potValue.data(), potValue.size());
+  TRI_ASSERT(potValue.size() == sizeof(GeoPot));
+  fromPersistent(potValue.data(), *gp);
 }
 
 void PotWrite(GeoIx * gix, int pot, GeoPot * gp) {
   RocksDBKey key = RocksDBKey::GeoIndexValue(gix->objectId, pot, false);
-  RocksWrite(gix, key, rocksdb::Slice((char*)gp, sizeof(GeoPot)));
+  char data[sizeof (GeoPot)];
+  toPersistent(*gp, &data[0]);
+  RocksWrite(gix, key, rocksdb::Slice(&data[0], sizeof(GeoPot)));
 }
 
 /* =================================================== */

arangod/RocksDBEngine/RocksDBGeoIndexImpl.h

@@ -37,7 +37,7 @@ namespace rocksdbengine {
 /* first the things that a user might want to change */
 
 /* a GeoString - a signed type of at least 64 bits   */
-typedef std::uint_fast64_t GeoString;
+typedef std::uint64_t GeoString;
 
 /* percentage growth of slot or slotslot tables     */
 #define GeoIndexGROW 50

js/apps/system/_admin/aardvark/APP/cluster.js

@@ -55,7 +55,7 @@ if (cluster.isCluster()) {
     res.json(list.map(n => { 
       var r = { "id": n.serverId, "name": n.serverName, "role": "primary" };
       r.status = "ok";
-      const endpoint = global.ArangoClusterInfo.getServerEndpoint(n);
+      const endpoint = global.ArangoClusterInfo.getServerEndpoint(r.id);
       const proto = endpoint.substr(0, 6);
       if (proto === "tcp://") {
         r.protocol = "http";

lib/Random/RandomGenerator.cpp

@@ -60,7 +60,7 @@ unsigned long RandomDevice::seed() {
   auto now = std::chrono::duration_cast<std::chrono::nanoseconds>(
     std::chrono::high_resolution_clock::now().time_since_epoch()).count();
 
-  return dev + tid + now;
+  return (unsigned long)(dev + tid + now);
   
 }
 

scripts/tmux_starter

@@ -36,7 +36,7 @@ suite_all(){
     local tests=""
     case $count in
         num)
-            echo "6"
+            echo "11"
             return
         ;;
         name)
@@ -48,21 +48,33 @@ suite_all(){
             return
         ;;
         1)
-            tests="shell_server shell_client"
+            tests="shell_server"
         ;;
         2)
-            tests="shell_server_aql"
+            tests="shell_client"
-        ;;
-        2)
-            tests="http_server server_http"
         ;;
         3)
-            tests="dump importing export arangobench upgrade"
+            tests="shell_server_aql"
         ;;
         4)
-            tests="replication_sync replication_static replication_ongoing http_replication shell_replication"
+            tests="http_server"
         ;;
         5)
+            tests="server_http"
+        ;;
+        6)
+            tests="dump importing"
+        ;;
+        7)
+            tests="export arangobench upgrade"
+        ;;
+        8)
+            tests="replication_sync replication_static"
+        ;;
+        9)
+            tests="replication_ongoing http_replication shell_replication"
+        ;;
+        10)
             tests="agency cluster_sync"
         ;;
         *)

tests/CMakeLists.txt

@@ -55,6 +55,7 @@ add_executable(
   Geo/georeg.cpp
   Pregel/typedbuffer.cpp
   RocksDBEngine/IndexEstimatorTest.cpp
+  RocksDBEngine/TypeConversionTest.cpp
   main.cpp
 )
 

tests/RocksDBEngine/TypeConversionTest.cpp

@@ -0,0 +1,82 @@
+////////////////////////////////////////////////////////////////////////////////
+///
+/// @file
+///
+/// DISCLAIMER
+///
+/// Copyright 2004-2012 triagens GmbH, Cologne, Germany
+///
+/// Licensed under the Apache License, Version 2.0 (the "License");
+/// you may not use this file except in compliance with the License.
+/// You may obtain a copy of the License at
+///
+///     http://www.apache.org/licenses/LICENSE-2.0
+///
+/// Unless required by applicable law or agreed to in writing, software
+/// distributed under the License is distributed on an "AS IS" BASIS,
+/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+/// See the License for the specific language governing permissions and
+/// limitations under the License.
+///
+/// Copyright holder is triAGENS GmbH, Cologne, Germany
+///
+/// @author Jan Christoph Uhde
+/// @author Copyright 2017, ArangoDB GmbH, Cologne, Germany
+////////////////////////////////////////////////////////////////////////////////
+
+
+#include "catch.hpp"
+#include "RocksDBEngine/RocksDBCommon.h"
+
+#include <vector>
+#include <limits>
+
+using namespace arangodb;
+
+// -----------------------------------------------------------------------------
+// --SECTION--                                                        test suite
+// -----------------------------------------------------------------------------
+
+using namespace arangodb::rocksutils;
+// @brief setup
+
+void doFromToTest(double num){
+  CHECK( (num == intToDouble(doubleToInt(num))) );
+}
+
+template <typename T>
+void doFromToTest(T num){
+  T x = num , y;
+  char s[sizeof(x)];
+  char* p = &s[0];
+  toPersistent(x,p);
+  y = fromPersistent<T>(p);
+  CHECK((x == y));
+}
+
+TEST_CASE("TypeConversion", "[type_conv]") {
+
+// @brief Test fixme
+
+SECTION("test_from_to_persist_uint64"){
+  doFromToTest(std::numeric_limits<uint64_t>::min());
+  doFromToTest(std::numeric_limits<uint64_t>::max()/2);
+  doFromToTest(std::numeric_limits<uint64_t>::max());
+}
+
+
+SECTION("test_from_to_persist_int32"){
+  doFromToTest(std::numeric_limits<int32_t>::min());
+  doFromToTest(std::numeric_limits<int32_t>::lowest());
+  doFromToTest(std::numeric_limits<int32_t>::max()/2);
+  doFromToTest(std::numeric_limits<int32_t>::max());
+}
+
+// @brief generate tests
+SECTION("test_from_to_double"){
+  doFromToTest(std::numeric_limits<double>::min());
+  doFromToTest(std::numeric_limits<double>::lowest());
+  doFromToTest(std::numeric_limits<double>::max()/2);
+  doFromToTest(std::numeric_limits<double>::max());
+}
+}