To create an sequential znode using the Zookeeper Java Shell, we have to specify the - flag in the createcommand.
时间: 2024-03-08 14:48:03 浏览: 23
To create a sequential znode using the ZooKeeper Java Shell, we have to specify the `-s` flag in the `create` command.
For example, the following command creates a sequential znode named "myznode" in the root directory "/":
```
create -s /myznode "data"
```
The `-s` flag tells ZooKeeper to append a monotonically increasing sequence number to the end of the znode name. The resulting znode name will be something like "/myznode000000001" or "/myznode000000002", depending on the order in which the znodes are created.
相关问题
write python code using keras to classify hand-writter digits from the MNIST dataset,
```python
from keras.datasets import mnist
from keras.models import Sequential
from keras.layers import Dense
from keras.utils import to_categorical
# load data
(X_train, y_train), (X_test, y_test) = mnist.load_data()
# flatten data
X_train = X_train.reshape(60000, 784)
X_test = X_test.reshape(10000, 784)
# normalize data
X_train = X_train.astype('float32')
X_test = X_test.astype('float32')
X_train /= 255
X_test /= 255
# one-hot encode the labels
y_train = to_categorical(y_train, 10)
y_test = to_categorical(y_test, 10)
# create model
model = Sequential()
model.add(Dense(512, input_shape=(784,), activation='relu'))
model.add(Dense(10, activation='softmax'))
# compile model
model.compile(optimizer='adam', loss='categorical_crossentropy', metrics=['accuracy'])
# train model
model.fit(X_train, y_train, epochs=5, batch_size=32)
# evaluate model
test_loss, test_acc = model.evaluate(X_test, y_test)
print('Test accuracy:', test_acc)
```
这是一个使用 Keras 对 MNIST 数据集中手写数字进行分类的示例代码。它将加载数据、构建模型、编译模型、训练模型和评估模型的过程都包含在其中。
how to use IntStream.rangeclose in java ?
`IntStream.rangeClosed` is a method in Java that returns a sequential ordered `IntStream` from `startInclusive` to `endInclusive` by an incremental step of one.
Here's an example of how to use `IntStream.rangeClosed` in Java:
```java
import java.util.stream.IntStream;
public class IntStreamExample {
public static void main(String[] args) {
// Create an IntStream from 1 to 10 (inclusive)
IntStream.rangeClosed(1, 10)
.forEach(System.out::println);
}
}
```
The output of the above code will be:
```
1
2
3
4
5
6
7
8
9
10
```
In the above example, we created an `IntStream` from 1 to 10 (inclusive) using the `IntStream.rangeClosed` method and then used the `forEach` method to print each element of the stream.