Revert "KAFKA-4345; Run decktape test for each pull request"

This reverts commit e035fc0395 for the
following reasons:

1. License files are missing causing local builds to fail during the
rat task (rat is not being run in Jenkins for some reason, filed
KAFKA-4459 for that)
2. It renames a number of system test files when there's a better
way to achieve the goal of running a subset of system tests to stay
under the Travis limit.
3. It adds the gradle wrapper binary even though this was removed
intentionally a while back.

A new PR will be submitted for KAFKA-4345 without the undesired
changes.

Author: Ismael Juma <ismael@juma.me.uk>

Reviewers: Jason Gustafson <jason@confluent.io>, Ewen Cheslack-Postava <ewen@confluent.io>

Closes #2187 from ijuma/kafka-4345-revert

.travis.yml

@@ -1,48 +0,0 @@
-#  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.
-
-sudo: required
-dist: trusty
-language: java
-
-# TODO enable failing splits after they have been stablized
-env:
-  - TC_PATHS="tests/kafkatest/tests/client1"
-  - TC_PATHS="tests/kafkatest/tests/client2"
-# - TC_PATHS="tests/kafkatest/tests/connect tests/kafkatest/tests/streams tests/kafkatest/tests/tools"
-# - TC_PATHS="tests/kafkatest/tests/mirror_maker"
-# - TC_PATHS="tests/kafkatest/tests/replication"
-# - TC_PATHS="tests/kafkatest/tests/upgrade"
-  - TC_PATHS="tests/kafkatest/tests/security1"
-# - TC_PATHS="tests/kafkatest/tests/security2"
-# - TC_PATHS="tests/kafkatest/tests/core1"
-  - TC_PATHS="tests/kafkatest/tests/core2"
-
-jdk:
-  - oraclejdk8
-
-before_install:
-
-script:
-  - ./gradlew releaseTarGz && /bin/bash ./tests/travis/run_tests.sh
-
-services:
-  - docker
-
-before_cache:
-  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
-  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
-cache:
-  directories:
-    - "$HOME/.m2/repository"
-    - "$HOME/.gradle/caches/"
-    - "$HOME/.gradle/wrapper/"

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +0,0 @@
-#Fri Oct 07 16:09:33 PDT 2016
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.0-bin.zip

tests/README.md

@@ -6,43 +6,6 @@ This directory contains Kafka system integration and performance tests.
 (ducktape is a distributed testing framework which provides test runner,
 result reporter and utilities to pull up and tear down services.)
 
-Running tests using docker
---------------------------
-Docker is used for running kafka system tests on travis-ci. And exactly same setup can be run for development purposes.
-
-* Run all tests
-```
-bash tests/travis/run_tests.sh
-```
-* Run all tests with debug on (warning will produce log of logs)
-```
-_DUCKTAPE_OPTIONS="--debug" bash tests/travis/run_tests.sh | tee debug_logs.txt
-```
-* Run a subset of tests
-```
-TC_PATHS="tests/kafkatest/tests/streams tests/kafkatest/tests/tools" bash tests/travis/run_tests.sh
-```
-
-Examining CI run
-----------------
-* Set BUILD_ID is travis ci's build id. E.g. build id is 169519874 for the following build
-```
-https://travis-ci.org/raghavgautam/kafka/builds/169519874
-```
-
-* Getting number of tests that were actually run
-```
-for id in $(curl -sSL https://api.travis-ci.org/builds/$BUILD_ID | jq '.matrix|map(.id)|.[]'); do curl -sSL "https://api.travis-ci.org/jobs/$id/log.txt?deansi=true" ; done | egrep 'SerialTestRunner.*setting up' | wc
-```
-* Getting number of tests that passed
-```
-for id in $(curl -sSL https://api.travis-ci.org/builds/$BUILD_ID | jq '.matrix|map(.id)|.[]'); do curl -sSL "https://api.travis-ci.org/jobs/$id/log.txt?deansi=true" ; done | egrep 'SerialTestRunner.*PASS' | wc
-```
-* Getting all the logs produced from a run
-```
-for id in $(curl -sSL https://api.travis-ci.org/builds/169519874 | jq '.matrix|map(.id)|.[]'); do curl -sSL "https://api.travis-ci.org/jobs/$id/log.txt?deansi=true" ; done
-```
-
 Local Quickstart
 ----------------
 This quickstart will help you run the Kafka system tests on your local machine. Note this requires bringing up a cluster of virtual machines on your local computer, which is memory intensive; it currently requires around 10G RAM.

tests/cluster_file.json

@@ -1,97 +0,0 @@
-{
-  "_comment": [
-    "Licensed to the Apache Software Foundation (ASF) under one or more",
-    "contributor license agreements.  See the NOTICE file distributed with",
-    "this work for additional information regarding copyright ownership.",
-    "The ASF licenses this file to You 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."
-  ],
-  "nodes": [
-    {
-      "hostname": "knode02.knw",
-      "user": "root",
-      "ssh_args": "",
-      "ssh_hostname": "",
-      "externally_routable_ip": "knode02.knw"
-    },
-    {
-      "hostname": "knode03.knw",
-      "user": "root",
-      "ssh_args": "",
-      "ssh_hostname": "",
-      "externally_routable_ip": "knode03.knw"
-    },
-    {
-      "hostname": "knode04.knw",
-      "user": "root",
-      "ssh_args": "",
-      "ssh_hostname": "",
-      "externally_routable_ip": "knode04.knw"
-    },
-    {
-      "hostname": "knode05.knw",
-      "user": "root",
-      "ssh_args": "",
-      "ssh_hostname": "",
-      "externally_routable_ip": "knode05.knw"
-    },
-    {
-      "hostname": "knode06.knw",
-      "user": "root",
-      "ssh_args": "",
-      "ssh_hostname": "",
-      "externally_routable_ip": "knode06.knw"
-    },
-    {
-      "hostname": "knode07.knw",
-      "user": "root",
-      "ssh_args": "",
-      "ssh_hostname": "",
-      "externally_routable_ip": "knode07.knw"
-    },
-    {
-      "hostname": "knode08.knw",
-      "user": "root",
-      "ssh_args": "",
-      "ssh_hostname": "",
-      "externally_routable_ip": "knode08.knw"
-    },
-    {
-      "hostname": "knode09.knw",
-      "user": "root",
-      "ssh_args": "",
-      "ssh_hostname": "",
-      "externally_routable_ip": "knode09.knw"
-    },
-    {
-      "hostname": "knode10.knw",
-      "user": "root",
-      "ssh_args": "",
-      "ssh_hostname": "",
-      "externally_routable_ip": "knode10.knw"
-    },
-    {
-      "hostname": "knode11.knw",
-      "user": "root",
-      "ssh_args": "",
-      "ssh_hostname": "",
-      "externally_routable_ip": "knode11.knw"
-    },
-    {
-      "hostname": "knode12.knw",
-      "user": "root",
-      "ssh_args": "",
-      "ssh_hostname": "",
-      "externally_routable_ip": "knode12.knw"
-    }
-  ]
-}

tests/kafkatest/directory_layout/kafka_path.py

@@ -44,11 +44,11 @@ TOOLS_DEPENDANT_TEST_LIBS_JAR_NAME = "tools-dependant-libs"
 
 JARS = {
     "trunk": {
-        CORE_JAR_NAME: "libs/*.jar",
+        CORE_JAR_NAME: "core/build/*/*.jar",
-        CORE_LIBS_JAR_NAME: "libs/*.jar",
+        CORE_LIBS_JAR_NAME: "core/build/libs/*.jar",
-        CORE_DEPENDANT_TEST_LIBS_JAR_NAME: "libs/*.jar",
+        CORE_DEPENDANT_TEST_LIBS_JAR_NAME: "core/build/dependant-testlibs/*.jar",
-        TOOLS_JAR_NAME: "libs/*.jar",
+        TOOLS_JAR_NAME: "tools/build/libs/kafka-tools*.jar",
-        TOOLS_DEPENDANT_TEST_LIBS_JAR_NAME: "libs/*.jar"
+        TOOLS_DEPENDANT_TEST_LIBS_JAR_NAME: "tools/build/dependant-libs*/*.jar"
     }
 }
 

tests/kafkatest/services/mirror_maker.py

@@ -180,13 +180,13 @@ class MirrorMaker(KafkaPathResolverMixin, Service):
         cmd = self.start_cmd(node)
         self.logger.debug("Mirror maker command: %s", cmd)
         node.account.ssh(cmd, allow_fail=False)
-        wait_until(lambda: self.alive(node), timeout_sec=30, backoff_sec=.5,
+        wait_until(lambda: self.alive(node), timeout_sec=10, backoff_sec=.5,
                    err_msg="Mirror maker took to long to start.")
         self.logger.debug("Mirror maker is alive")
 
     def stop_node(self, node, clean_shutdown=True):
         node.account.kill_process("java", allow_fail=True, clean_shutdown=clean_shutdown)
-        wait_until(lambda: not self.alive(node), timeout_sec=30, backoff_sec=.5,
+        wait_until(lambda: not self.alive(node), timeout_sec=10, backoff_sec=.5,
                    err_msg="Mirror maker took to long to stop.")
 
     def clean_node(self, node):

tests/kafkatest/tests/core/upgrade_test.py

@@ -111,7 +111,7 @@ class TestUpgrade(ProduceConsumeValidateTest):
 
         # TODO - reduce the timeout
         self.consumer = ConsoleConsumer(self.test_context, self.num_consumers, self.kafka,
-                                        self.topic, consumer_timeout_ms=200000, new_consumer=new_consumer,
+                                        self.topic, consumer_timeout_ms=30000, new_consumer=new_consumer,
                                         message_validator=is_int, version=KafkaVersion(from_kafka_version))
 
         self.run_produce_consume_validate(core_test_action=lambda: self.perform_upgrade(from_kafka_version,

tests/kafkatest/tests/produce_consume_validate.py

@@ -12,7 +12,6 @@
 # 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.
-import traceback
 
 from ducktape.tests.test import Test
 from ducktape.utils.util import wait_until
@@ -103,7 +102,7 @@ class ProduceConsumeValidateTest(Test):
         except BaseException as e:
             for s in self.test_context.services:
                 self.mark_for_collect(s)
-            raise Exception(traceback.format_exc(e))
+            raise
 
     @staticmethod
     def annotate_missing_msgs(missing, acked, consumed, msg):

tests/travis/Dockerfile

@@ -1,38 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one or more
-# contributor license agreements.  See the NOTICE file distributed with
-# this work for additional information regarding copyright ownership.
-# The ASF licenses this file to You 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.
-
-FROM openjdk:8
-
-MAINTAINER Raghav Kumar Gautam
-# commands to update docker image:
-#   - docker build . -t raghavgautam/kfk-image
-#   - docker push raghavgautam/kfk-image
-RUN apt update
-RUN apt install -y unzip wget curl jq coreutils openssh-server net-tools vim openjdk-8-jdk python-pip
-RUN pip install ducktape
-
-VOLUME ["/kafka"]
-VOLUME ["/kfk_src"]
-
-ENV MIRROR="http://apache.cs.utah.edu/"
-RUN wget -q "${MIRROR}kafka/0.8.2.2/kafka_2.10-0.8.2.2.tgz" -O "/tmp/kafka_2.10-0.8.2.2.tgz" && tar xfz /tmp/kafka_2.10-0.8.2.2.tgz -C /opt && mv "/opt/kafka_2.10-0.8.2.2" "/opt/kafka-0.8.2.2"
-RUN wget -q "${MIRROR}kafka/0.9.0.1/kafka_2.10-0.9.0.1.tgz" -O "/tmp/kafka_2.10-0.9.0.1.tgz" && tar xfz /tmp/kafka_2.10-0.9.0.1.tgz -C /opt && mv "/opt/kafka_2.10-0.9.0.1" "/opt/kafka-0.9.0.1"
-RUN wget -q "${MIRROR}kafka/0.10.0.1/kafka_2.10-0.10.0.1.tgz" -O "/tmp/kafka_2.10-0.10.0.1.tgz" && tar xfz /tmp/kafka_2.10-0.10.0.1.tgz -C /opt && mv "/opt/kafka_2.10-0.10.0.1" "/opt/kafka-0.10.0.1"
-
-RUN rm /tmp/kafka_*.tgz
-ADD ssh /root/.ssh
-RUN chmod 600 /root/.ssh/id_rsa
-
-CMD service ssh start && tail -f /dev/null

tests/travis/run_tests.sh

@@ -1,58 +0,0 @@
-#!/usr/bin/env bash
-# Licensed to the Apache Software Foundation (ASF) under one or more
-# contributor license agreements.  See the NOTICE file distributed with
-# this work for additional information regarding copyright ownership.
-# The ASF licenses this file to You 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.
-
-# To run tests use a command like:
-#   TC_PATHS="tests/kafkatest/tests/streams tests/kafkatest/tests/tools" bash tests/travis/run_tests.sh
-set -x
-
-SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-TESTS_DIR=`dirname ${SCRIPT_DIR}`
-KFK_SRC=`dirname ${TESTS_DIR}`
-
-
-cd ${SCRIPT_DIR}
-chmod 600 ssh/id_rsa
-
-docker network rm knw
-docker network create knw
-
-docker kill $(docker ps -f=network=knw -q)
-docker rm $(docker ps -a -f=network=knw -q)
-
-for i in $(seq -w 1 12); do
-  docker run -d -t --name knode${i} --network knw -v ${KFK_SRC}:/kfk_src raghavgautam/kfk-image
-done
-
-docker info
-docker ps
-docker network inspect knw
-
-for i in $(seq -w 1 12); do
-  echo knode${i}
-  docker exec knode${i} bash -c "(tar xfz /kfk_src/core/build/distributions/kafka_*SNAPSHOT.tgz -C /opt || echo missing kafka tgz did you build kafka tarball) && mv /opt/kafka*SNAPSHOT /opt/kafka-trunk && ls -l /opt"
-  docker exec knode01 bash -c "ssh knode$i hostname"
-done
-
-# hack to copy test dependencies
-# this is required for running MiniKDC
-(cd ${KFK_SRC} && ./gradlew copyDependantTestLibs)
-for i in $(seq -w 1 12); do
-  echo knode${i}
-  docker exec knode${i} bash -c "cp /kfk_src/core/build/dependant-testlibs/* /opt/kafka-trunk/libs/"
-  docker exec knode01 bash -c "ssh knode$i hostname"
-done
-
-docker exec knode01 bash -c "cd /kfk_src; ducktape ${_DUCKTAPE_OPTIONS} --cluster-file tests/cluster_file.json ${TC_PATHS:-tests/kafkatest/tests}"

tests/travis/ssh/authorized_keys

@@ -1,15 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one or more
-# contributor license agreements.  See the NOTICE file distributed with
-# this work for additional information regarding copyright ownership.
-# The ASF licenses this file to You 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.
-ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC0qDT9kEPWc8JQ53b4KnT/ZJOLwb+3c//jpLW/2ofjDyIsPW4FohLpicfouch/zsRpN4G38lua+2BsGls9sMIZc6PXY2L+NIGCkqEMdCoU1Ym8SMtyJklfzp3m/0PeK9s2dLlR3PFRYvyFA4btQK5hkbYDNZPzf4airvzdRzLkrFf81+RemaMI2EtONwJRcbLViPaTXVKJdbFwJTJ1u7yu9wDYWHKBMA92mHTQeP6bhVYCqxJn3to/RfZYd+sHw6mfxVg5OrAlUOYpSV4pDNCAsIHdtZ56V8NQlJL6NJ2vzzSSYUwLMqe88fhrC8yYHoxC07QPy1EdkSTHdohAicyT root@knode01.knw

tests/travis/ssh/config

@@ -1,21 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one or more
-# contributor license agreements.  See the NOTICE file distributed with
-# this work for additional information regarding copyright ownership.
-# The ASF licenses this file to You 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.
-
-Host *
-  ControlMaster auto
-  ControlPath ~/.ssh/master-%r@%h:%p
-  StrictHostKeyChecking no
-  ConnectTimeout=10
-  IdentityFile ~/.ssh/id_rsa

tests/travis/ssh/id_rsa

@@ -1,27 +0,0 @@
------BEGIN RSA PRIVATE KEY-----
-MIIEpQIBAAKCAQEAtKg0/ZBD1nPCUOd2+Cp0/2STi8G/t3P/46S1v9qH4w8iLD1u
-BaIS6YnH6LnIf87EaTeBt/JbmvtgbBpbPbDCGXOj12Ni/jSBgpKhDHQqFNWJvEjL
-ciZJX86d5v9D3ivbNnS5UdzxUWL8hQOG7UCuYZG2AzWT83+Goq783Ucy5KxX/Nfk
-XpmjCNhLTjcCUXGy1Yj2k11SiXWxcCUydbu8rvcA2FhygTAPdph00Hj+m4VWAqsS
-Z97aP0X2WHfrB8Opn8VYOTqwJVDmKUleKQzQgLCB3bWeelfDUJSS+jSdr880kmFM
-CzKnvPH4awvMmB6MQtO0D8tRHZEkx3aIQInMkwIDAQABAoIBAQCz6EMFNNLp0NP1
-X9yRXS6wW4e4CRWUazesiw3YZpcmnp6IchCMGZA99FEZyVILPW1J3tYWyotBdw7Z
-+RFeCRXy5L+IMtiVkNJcpwss7M4ve0w0LkY0gj5V49xJ+3Gp4gDnZSxcguvrAem5
-yP5obR572fDpl0SknB4HCr6U2l+rauzrLyevy5eeDT/vmXbuM1cdHpNIXmmElz4L
-t31n+exQRn6tP1h516iXbcYbopxDgdv2qKGAqzWKE6TyWpzF5x7kjOEYt0bZ5QO3
-Lwh7AAqE/3mwxlYwng1L4WAT7RtcP19W+9JDIc7ENInMGxq6q46p1S3IPZsf1cj/
-aAJ9q3LBAoGBAOVJr0+WkR786n3BuswpGQWBgVxfai4y9Lf90vuGKawdQUzXv0/c
-EB/CFqP/dIsquukA8PfzjNMyTNmEHXi4Sf16H8Rg4EGhIYMEqIQojx1t/yLLm0aU
-YPEvW/02Umtlg3pJw9fQAAzFVqCasw2E2lUdAUkydGRwDUJZmv2/b3NzAoGBAMm0
-Jo7Et7ochH8Vku6uA+hG+RdwlKFm5JA7/Ci3DOdQ1zmJNrvBBFQLo7AjA4iSCoBd
-s9+y0nrSPcF4pM3l6ghLheaqbnIi2HqIMH9mjDbrOZiWvbnjvjpOketgNX8vV3Ye
-GUkSjoNcmvRmdsICmUjeML8bGOmq4zF9W/GIfTphAoGBAKGRo8R8f/SLGh3VtvCI
-gUY89NAHuEWnyIQii1qMNq8+yjYAzaHTm1UVqmiT6SbrzFvGOwcuCu0Dw91+2Fmp
-2xGPzfTOoxf8GCY/0ROXlQmS6jc1rEw24Hzz92ldrwRYuyYf9q4Ltw1IvXtcp5F+
-LW/OiYpv0E66Gs3HYI0wKbP7AoGBAJMZWeFW37LQJ2TTJAQDToAwemq4xPxsoJX7
-2SsMTFHKKBwi0JLe8jwk/OxwrJwF/bieHZcvv8ao2zbkuDQcz6/a/D074C5G8V9z
-QQM4k1td8vQwQw91Yv782/gvgvRNX1iaHNCowtxURgGlVEirQoTc3eoRZfrLkMM/
-7DTa2JEhAoGACEu3zHJ1sgyeOEgLArUJXlQM30A/ulMrnCd4MEyIE+ReyWAUevUQ
-0lYdVNva0/W4C5e2lUOJL41jjIPLqI7tcFR2PZE6n0xTTkxNH5W2u1WpFeKjx+O3
-czv7Bt6wYyLHIMy1JEqAQ7pw1mtJ5s76UDvXUhciF+DU2pWYc6APKR0=
------END RSA PRIVATE KEY-----

tests/travis/ssh/id_rsa.pub

@@ -1 +0,0 @@
-ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC0qDT9kEPWc8JQ53b4KnT/ZJOLwb+3c//jpLW/2ofjDyIsPW4FohLpicfouch/zsRpN4G38lua+2BsGls9sMIZc6PXY2L+NIGCkqEMdCoU1Ym8SMtyJklfzp3m/0PeK9s2dLlR3PFRYvyFA4btQK5hkbYDNZPzf4airvzdRzLkrFf81+RemaMI2EtONwJRcbLViPaTXVKJdbFwJTJ1u7yu9wDYWHKBMA92mHTQeP6bhVYCqxJn3to/RfZYd+sHw6mfxVg5OrAlUOYpSV4pDNCAsIHdtZ56V8NQlJL6NJ2vzzSSYUwLMqe88fhrC8yYHoxC07QPy1EdkSTHdohAicyT root@knode01.knw