Question

我设置了一个包含2个节点的cassandra集群。在几千次写入之后，它开始抛出TimeOut异常，直到我重新启动cassandra服务之后才会消失。我正在使用phpcassa（写作时最新）。

Cassandra.yaml

cluster_name：'测试群集'
seed_provider：
- class_name：org.apache.cassandra.locator.SimpleSeedProvider
参数：
- 种子：“192.168.2.101”
rpc_address：0.0.0.0
rpc_port：8080

Cassandra.yaml 1

initial_token：0
listen_address：192.168.2.101

Cassandra.yaml 2

initial_token：85070591730234615865843651857942052864
listen_address：192.168.2.102

假设此配置正确，我的代码一定存在问题。这是我为重现错误而制作的测试脚本：

$pool = Config::ConnectionPool();
$stressTest = new ColumnFamily($pool, 'TwitterTest');
$id = 392766928478932992;

while(true)
{
    try
    {
        $stressTest->insert($id++, array("analyzed"=>0, "followersCount"=>"35",
            "friendsCount"=>"30", "lang"=>"en", "listedCount"=>"0",
            "name"=>"Henky Tanky", "statusesCount"=>"X", "text"=>"@HERPDERP dude i kno i lost a 16gb flash drive #MEH",
            "time"=>"2013-10-22 23:38:27", "twitterId"=>"392766928478932992", "username"=>"mehzor"),
            null, null, \cassandra\ConsistencyLevel::ANY);
    }
    catch (Exception $ex){
        print_r($ex);
        exit;
    }
}

class Config {
    static function ConnectionPool(){
        return new ConnectionPool('KSTwit', array('192.168.2.101:8080', '192.168.2.102:8080'));
    }
}

使用该配置我得到'cassandra \ TimedOutException'（Stacktrace 1）

// Set max-retries to 5, and read/write timeout to 60 seconds
new ConnectionPool('KSTwit', array('192.168.2.101:8080', '192.168.2.102:8080'), NULL, 5, 60000, 60000);

使用该配置我得到'Thrift \ Exception \ TTransportException'（Stacktrace 2）

我尝试过各种ConsistencyLevels; ONE，QUORUM和ANY。所有这些都存在同样的问题。

正如我所说的那样，只有在几次写作之后才会出现异常。但是，如果我在异常发生后重新启动脚本，它将立即抛出异常。我必须重新启动cassandra服务然后再花费几千。这似乎只发生在写入。如果我不使用计数器列也会出现这种情况，因此不存在问题。

堆栈跟踪1

Error performing add on 192.168.2.101:8080: exception 'cassandra\TimedOutException' in /var/installstuff/cassphp/lib/Thrift/Base/TBase.php:206
Stack trace:
#0 /var/installstuff/cassphp/lib/cassandra/Cassandra.php(3575): Thrift\Base\TBase->_read('Cassandra_add_r...', Array, Object(Thrift\Protocol\TBinaryProtocolAccelerated))
#1 /var/installstuff/cassphp/lib/cassandra/Cassandra.php(768): cassandra\Cassandra_add_result->read(Object(Thrift\Protocol\TBinaryProtocolAccelerated))
#2 /var/installstuff/cassphp/lib/cassandra/Cassandra.php(728): cassandra\CassandraClient->recv_add()
#3 [internal function]: cassandra\CassandraClient->add('All Tweets', Object(cassandra\ColumnParent), Object(cassandra\CounterColumn), 1)
#4 /var/installstuff/cassphp/lib/phpcassa/Connection/ConnectionPool.php(264): call_user_func_array(Array, Array)
#5 /var/installstuff/cassphp/lib/phpcassa/ColumnFamily.php(44): phpcassa\Connection\ConnectionPool->call('add', 'All Tweets', Object(cassandra\ColumnParent), Object(cassandra\CounterColumn), 1)
#6 /var/installstuff/cassphp/examples/db/TweetDatabase.php(103): phpcassa\ColumnFamily->add('All Tweets', 'Total')
#7 /var/installstuff/cassphp/examples/core/Helper.php(16): {closure}()
#8 /var/installstuff/cassphp/examples/db/TweetDatabase.php(104): Helper::DoForgiving(Object(Closure))
#9 /var/installstuff/cassphp/examples/core/twitterParser.php(98): TweetDatabaseCassandra->AddTweet('392633738364190...', Array)
#10 /var/installstuff/cassphp/examples/core/twitterParser.php(192): TwitterParser->RunOnce()
#11 /var/installstuff/cassphp/examples/runners/twitterParserCassandra.php(19): TwitterParser->Run()
#12 {main}

堆栈跟踪2

Error performing add on 192.168.2.101:8080: exception 'Thrift\Exception\TTransportException' with message 'TSocket: timed out reading 4 bytes from 192.168.2.101:8080' in /var/installstuff/cassphp/lib/Thrift/Transport/TSocket.php:284
Stack trace:
#0 /var/installstuff/cassphp/lib/Thrift/Transport/TTransport.php(74): Thrift\Transport\TSocket->read(4)
#1 /var/installstuff/cassphp/lib/Thrift/Transport/TFramedTransport.php(139): Thrift\Transport\TTransport->readAll(4)
#2 /var/installstuff/cassphp/lib/Thrift/Transport/TFramedTransport.php(106): Thrift\Transport\TFramedTransport->readFrame()
#3 /var/installstuff/cassphp/lib/Thrift/Transport/TTransport.php(74): Thrift\Transport\TFramedTransport->read(4)
#4 /var/installstuff/cassphp/lib/Thrift/Protocol/TBinaryProtocol.php(305): Thrift\Transport\TTransport->readAll(4)
#5 /var/installstuff/cassphp/lib/Thrift/Protocol/TBinaryProtocol.php(197): Thrift\Protocol\TBinaryProtocol->readI32(NULL)
#6 /var/installstuff/cassphp/lib/cassandra/Cassandra.php(760): Thrift\Protocol\TBinaryProtocol->readMessageBegin(NULL, 0, 0)
#7 /var/installstuff/cassphp/lib/cassandra/Cassandra.php(728): cassandra\CassandraClient->recv_add()
#8 [internal function]: cassandra\CassandraClient->add('All Tweets', Object(cassandra\ColumnParent), Object(cassandra\CounterColumn), 1)
#9 /var/installstuff/cassphp/lib/phpcassa/Connection/ConnectionPool.php(264): call_user_func_array(Array, Array)
#10 /var/installstuff/cassphp/lib/phpcassa/ColumnFamily.php(44): phpcassa\Connection\ConnectionPool->call('add', 'All Tweets', Object(cassandra\ColumnParent), Object(cassandra\CounterColumn), 1)
#11 /var/installstuff/cassphp/examples/db/TweetDatabase.php(103): phpcassa\ColumnFamily->add('All Tweets', 'Total')
#12 /var/installstuff/cassphp/examples/core/Helper.php(17): {closure}()
#13 /var/installstuff/cassphp/examples/db/TweetDatabase.php(104): Helper::DoForgiving(Object(Closure))
#14 /var/installstuff/cassphp/examples/core/twitterParser.php(98): TweetDatabaseCassandra->AddTweet('392642135327264...', Array)
#15 /var/installstuff/cassphp/examples/core/twitterParser.php(192): TwitterParser->RunOnce()
#16 /var/installstuff/cassphp/examples/runners/twitterParserCassandra.php(19): TwitterParser->Run()
#17 {main}

cassandra日志并没有真正显示任何有趣的东西。除了这种情况之外，即使没有发生异常也会发生这种情况，所以我不认为这是问题;

INFO 10:58:58,241 Timed out replaying hints to /192.168.2.102; aborting further deliveries
WARN 11:07:17,979 MemoryMeter uninitialized (jamm not specified as java agent); assuming liveRatio of 10.0.  Usually this means cassandra-env.sh disabled jamm because you are using a buggy JRE; upgrade to the Sun JRE instead

使用'SIMPLE_STRATEGY'和'replication_factor = 2'设置Keyspace根据两台机器上的'nodetool ring'命令，即使触发了异常，节点仍然正常运行。老实说，我不知道下一步该尝试什么，有人能发现这个问题吗？

Answer 1

我用两种方法之一解决了这个问题（不能确定。）

我最初使用在线指南安装了cassandra，其中列出了这些回购协议;

deb http://www.apache.org/dist/cassandra/debian 11x main
deb-src http://www.apache.org/dist/cassandra/debian 11x main

这些已经过时，有一个20x版本，所以我更新了。

我还用sun的java替换了jsvc。现在一切正常。

超时后重启

1 个答案: