具有分区键的 cassandra getendpoints 具有 space

Question

我的分区键是 id(int) 和 name(text)。在 name(text) 中没有 space 之前，下面的命令工作正常。 nodetool getendpoints 测试测试table2 1:aaa;

如果我正在使用 nodetool getendpoints 测试测试table2 3:aac cc; 它抛出一个错误：nodetool: getendpoints requires keyspace, table and partition key arguments 参见 'nodetool help' 或 'nodetool help '。

我通过执行获得了令牌 SELECT id,name, token(id,name) FROM test.testtable2 where name='aac cc'AND id=3; 并试图搜索 nodetool getendpoints 测试测试table2 -7072928299163215694; 错误：对于输入字符串：“-7072928299163215694” - 堆栈跟踪 - java.lang.NumberFormatException：对于输入字符串：“-7072928299163215694”

我如何搜索分区键（名称）是否有 space？

Answer 1

您使用的是哪个 Cassandra 版本。

我已经从 Cassandra 2.x 和 Cassandra 3.x 版本测试过它。它工作正常。

root@cqlsh:test_db> SELECT token(name) from test_temp ;

 system.token(name)
---------------------
 -907920378987128470

nodetool getendpoints test_db test_temp -907920378987128470;
192.168.8.52

更新答案：找到问题

当分区键的第一部分是 int 时会产生问题。

CREATE TABLE test6 (
    age int PRIMARY KEY,
    name text
);

bin/nodetool getendpoints test test6 -7072928299163215694

error: For input string: "-7072928299163215694"java.lang.NumberFormatException: For input string:"-
7072928299163215694"
    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
    at java.lang.Integer.parseInt(Integer.java:583)
    at java.lang.Integer.parseInt(Integer.java:615)

但适用于以下输入

bin/nodetool getendpoints test test6 -7072
127.0.0.1

来自 DataStax 文档：

Provides the end points that own the partition key. The partitioner returns a token for the key. Cassandra will return an endpoint whether or not data exists on the identified node for that token. ** key is the partition key of the end points you want to get.

nodetool getendpoints 实际上将分区键的值作为输入。在这种情况下，'-7072928299163215694' 将其解析为整数，因此最终抛出异常。它适用于 long 或 String（它将“-7072928299163215694”值作为字符串），因为它已将此作为键的值而不是实际令牌。它不解析令牌。所以提供令牌作为输入是行不通的。

getendpoints 根据密钥的值生成令牌，并为您提供密钥所在的端点（节点）。

请检查此 link：

已为此提供补丁：

https://issues.apache.org/jira/browse/CASSANDRA-4551

希望对您有所帮助。

Answer 2

这是 nodetool 命令的问题。

我修改了 nodetool 脚本并创建了 getendpoints 脚本来支持 getendpoints 分区键有 space

这是 getendpoints 代码：

#!/bin/sh
# 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.

if [ "`basename "[=10=]"`" = 'nodeprobe' ]; then
    echo "***************************************************************" >&2
    echo "WARNING: [=10=] is obsolete, use `dirname "[=10=]"`/nodetool instead" >&2
    echo "***************************************************************" >&2
fi

if [ "x$CASSANDRA_INCLUDE" = "x" ]; then
    for include in "`dirname "[=10=]"`/cassandra.in.sh" \
                   "$HOME/.cassandra.in.sh" \
                   /usr/share/cassandra/cassandra.in.sh \
                   /usr/local/share/cassandra/cassandra.in.sh \
                   /opt/cassandra/cassandra.in.sh; do
        if [ -r "$include" ]; then
            . "$include"
            break
        fi
    done
elif [ -r "$CASSANDRA_INCLUDE" ]; then
    . "$CASSANDRA_INCLUDE"
fi

# Use JAVA_HOME if set, otherwise look for java in PATH
if [ -x "$JAVA_HOME/bin/java" ]; then
    JAVA="$JAVA_HOME/bin/java"
else
    JAVA="`which java`"
fi

if [ -z "$CASSANDRA_CONF" -o -z "$CLASSPATH" ]; then
    echo "You must set the CASSANDRA_CONF and CLASSPATH vars" >&2
    exit 1
fi

# Run cassandra-env.sh to pick up JMX_PORT
if [ -f "$CASSANDRA_CONF/cassandra-env.sh" ]; then
    . "$CASSANDRA_CONF/cassandra-env.sh"
fi

# JMX Port passed via cmd line args (-p 9999 / --port 9999 / --port=9999)
# should override the value from cassandra-env.sh
ARGS=""
JVM_ARGS=""
SSL_FILE=$HOME/.cassandra/nodetool-ssl.properties
KS=""
CF=""
KEY=""

while true
do
  if [ !  ]; then break; fi
  case  in
    -p)
      JMX_PORT=
      shift
      ;;
    --port=*)
      JMX_PORT=$(echo  | cut -d '=' -f 2)
      ;;
    --port)
      JMX_PORT=
      shift
      ;;
    --ssl)
      if [ -f $SSL_FILE ]
      then 
          SSL_ARGS=$(cat $SSL_FILE | tr '\n' ' ')
      fi
      JVM_ARGS="$JVM_ARGS -Dssl.enable=true $SSL_ARGS"
      ;;
    -D*)
      JVM_ARGS="$JVM_ARGS "
      ;;
    -k)
      KS=
      shift
      ;;
    -t)
      CF=
      shift
      ;;
    *)
      if [ ! $KEY ]; then 
    KEY=""
      else
    KEY="$KEY "
      fi
      ;;
  esac
  shift
done

# Special-case path variables.
case "`uname`" in
    CYGWIN*) 
        CLASSPATH="`cygpath -p -w "$CLASSPATH"`"
        CASSANDRA_CONF="`cygpath -p -w "$CASSANDRA_CONF"`"
    ;;
esac

"$JAVA" $JAVA_AGENT -cp "$CLASSPATH" \
      -Xmx128m \
      -Dcassandra.storagedir="$cassandra_storagedir" \
      -Dlogback.configurationFile=logback-tools.xml \
      -Dstorage-config="$CASSANDRA_CONF" \
      $JVM_ARGS \
      org.apache.cassandra.tools.NodeTool -p $JMX_PORT getendpoints $KS $CF "$KEY"

将getendpoints文件放在$CASSANDRA_HOME/bin目录下。

现在你可以运行这个文件带有 nodetool 参数，还有下面的参数

getendpoints -k keyspace_name -t table_name key

示例：

getendpoints -k test -t testtable2 3:aac cc

具有分区键的 cassandra getendpoints 具有 space

cassandra getendpoints with partition key has space

cassandra

distributed-database

cql3

datastax