只进行读取时，此时不允许进行AerospikeError操作

Question

我正在尝试用50个并行读取请求加载测试我的代码。

我正在基于我创建的多个索引查询数据。代码看起来像这样：

const fetchRecords = async (predicates) => {
let query = aeroClient.query('test', 'mySet');
let filters = [
predexp.stringValue(predicates.load),
predexp.stringBin('load'),
predexp.stringEqual(),
predexp.stringValue(predicates.disc),
predexp.stringBin('disc'),
predexp.stringEqual(),
predexp.integerBin('date1'),
predexp.integerValue(predicates.date2),
predexp.integerGreaterEq(),
predexp.integerBin('date2'),
predexp.integerValue(predicates.date2),
predexp.integerLessEq(),
predexp.stringValue(predicates.column3),
predexp.stringBin('column3'),
predexp.stringEqual(),
predexp.and(5),
]
query.where(filters);
let records = [];
let stream = query.foreach();
stream.on('data', record => {
records.push(record); 
})
stream.on('error', error => { throw error });
await new Promise((resolve, reject) => {
stream.on('end', () => resolve());
});
return records;
}

这失败了，我得到以下错误：

AerospikeError: Operation not allowed at this time.
at Function.fromASError (/Users/.../node_modules/aerospike/lib/error.js:113:21)
at QueryCommand.convertError (/Users/.../node_modules/aerospike/lib/commands/command.js:91:27)
at QueryCommand.convertResponse (/Users/.../node_modules/aerospike/lib/commands/command.js:101:24)
at asCallback (/Users/.../node_modules/aerospike/lib/commands/command.js:163:24)

我的aerospike.conf内容：

service {
user root
group root
paxos-single-replica-limit 1 # Number of nodes where the replica count is automatically reduced to 1.
pidfile /var/run/aerospike/asd.pid
#   service-threads 6 # cpu x 5 in 4.7 
#   transaction-queues 6 # obsolete in 4.7 
#   transaction-threads-per-queue 4 # obsolete in 4.7
proto-fd-max 15000
}
<...trimmed section>
namespace test {
replication-factor 2
memory-size 1G
default-ttl 30d # 5 days, use 0 to never expire/evict.
nsup-period 120
#   storage-engine memory
# To use file storage backing, comment out the line above and use the
# following lines instead.
storage-engine device {
file /opt/aerospike/data/test.dat
filesize 4G
data-in-memory true # Store data in memory in addition to file.
}
}

从一个类似的问题中，我发现这是由于低系统配置造成的。我该如何修改这些。此外，我认为50个请求应该有效，因为我能够插入大约12K条记录/秒。

Answer 1

我想这些是扫描，而不是单独读取。要增加扫描线程限制：

asinfo -v "set-config:context=service;scan-threads-limit=128"