国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂

How to view Debian Hadoop logs

Apr 12, 2025 pm 09:54 PM
tool ai

How to view Debian Hadoop logs

This article introduces how to efficiently view Hadoop logs in Debian system. Hadoop's log aggregation function centrally stores the logs of each node for easy management. The following steps will guide you on how to view these logs:

Step 1: Make sure log aggregation is enabled

First, confirm that log aggregation is enabled for all nodes in the Hadoop cluster. This is usually configured in yarn-site.xml configuration file:

<property>
  <name>yarn.log-aggregation-enable</name>
  <value>true</value>
</property>
<property>
  <name>yarn.log-aggregation.retain-seconds</name>
  <value>172800</value>
</property>
<property>
  <name>yarn.nodemanager.remote-app-log-dir</name>
  <value>/tmp/logs</value>
</property>
<property>
  <name>yarn.nodemanager.remote-app-log-dir-suffix</name>
  <value>logs</value>
</property>
<property>
  <name>yarn.log.server.url</name>
  <value>http://hadoop-node0:19888/jobhistory/logs</value>
</property>

Step 2: Access logs through the Web UI

After log aggregation, you can view the logs through Hadoop's ResourceManager Web UI or the Job History Server Web UI:

  • ResourceManager Web UI: The default address is http://<resourcemanager-hostname> :8088/cluster/apps/FINISHED</resourcemanager-hostname> .
  • Job History Server Web UI: The default address is http://<jobhistory-server-hostname> :19888/jobhistory</jobhistory-server-hostname> .

Step 3: Use the command line tool to view the log

If you need to read the logs directly from HDFS, you can use the hdfs dfs command:

 hdfs dfs -cat /path/to/logs/*

Step 4: Use a text editor to view the log

You can open and view log files using any text editor (such as nano , vim ):

 sudo nano /path/to/logs/application-<application-id> -container-<container-id> .log</container-id></application-id>

Note that log file paths and URLs may vary depending on Hadoop cluster configuration. Please refer to your Hadoop cluster configuration file for the exact path.

The above is the detailed content of How to view Debian Hadoop logs. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undress AI Tool

Undress AI Tool

Undress images for free

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Completed python blockbuster online viewing entrance python free finished website collection Completed python blockbuster online viewing entrance python free finished website collection Jul 23, 2025 pm 12:36 PM

This article has selected several top Python "finished" project websites and high-level "blockbuster" learning resource portals for you. Whether you are looking for development inspiration, observing and learning master-level source code, or systematically improving your practical capabilities, these platforms are not to be missed and can help you grow into a Python master quickly.

What is the blockchain confirmation time? How to query the confirmation status of transactions on the blockchain? What is the blockchain confirmation time? How to query the confirmation status of transactions on the blockchain? Jul 23, 2025 pm 11:48 PM

Blockchain confirmation time refers to the time it takes for a transaction to be broadcasted to be packaged by a block and written to the chain. The confirmation speeds of different chains vary. 1. Bitcoin produces blocks on average in 10 minutes, and it is recommended to confirm 6 times to ensure security; 2. Ethereum produces blocks in about 12 seconds, and 1-3 times can be confirmed, and most transactions are completed within 1 minute; 3. The BSC chain block time is about 3 seconds, suitable for high-frequency trading; 4. The TRON tide block time is 1-3 seconds, suitable for real-time transfer; 5. The Polygon block time is about 2 seconds, with low fees, and is widely used in DeFi and NFT. Trading hash (TxID) is required for query and confirmation status. Recommended platforms include: 1. Ouyi OKX, which supports multi-chain transaction query; 2. Binance, suitable for BSC chain; 3. Huobi HT

What is a blockchain browser? How to use it to track on-chain transaction data? What is a blockchain browser? How to use it to track on-chain transaction data? Jul 23, 2025 pm 11:54 PM

Blockchain browser is a must-have on-chain query tool for Web3 users. 1. It serves as a "search engine" in the decentralized world, allowing users to openly and transparently verify all records on the blockchain; 2. The core functions include querying transaction details, viewing account information, exploring block data and tracking smart contracts; 3. When tracking transactions, you need to obtain the transaction hash, select the browser corresponding to the public chain, and enter the hash to view the status, address, amount and fee details; 4. Confirm whether the transaction is successful through the browser is a key step to ensure the security of digital assets. Proficient use can help users better understand and participate in the blockchain ecosystem, thereby operating more safely and stably in the decentralized world.

Free entrance to Vue finished product resources website. Complete Vue finished product is permanently viewed online Free entrance to Vue finished product resources website. Complete Vue finished product is permanently viewed online Jul 23, 2025 pm 12:39 PM

This article has selected a series of top-level finished product resource websites for Vue developers and learners. Through these platforms, you can browse, learn, and even reuse massive high-quality Vue complete projects online for free, thereby quickly improving your development skills and project practice capabilities.

How to use PHP to develop product recommendation module PHP recommendation algorithm and user behavior analysis How to use PHP to develop product recommendation module PHP recommendation algorithm and user behavior analysis Jul 23, 2025 pm 07:00 PM

To collect user behavior data, you need to record browsing, search, purchase and other information into the database through PHP, and clean and analyze it to explore interest preferences; 2. The selection of recommendation algorithms should be determined based on data characteristics: based on content, collaborative filtering, rules or mixed recommendations; 3. Collaborative filtering can be implemented in PHP to calculate user cosine similarity, select K nearest neighbors, weighted prediction scores and recommend high-scoring products; 4. Performance evaluation uses accuracy, recall, F1 value and CTR, conversion rate and verify the effect through A/B tests; 5. Cold start problems can be alleviated through product attributes, user registration information, popular recommendations and expert evaluations; 6. Performance optimization methods include cached recommendation results, asynchronous processing, distributed computing and SQL query optimization, thereby improving recommendation efficiency and user experience.

Hong Kong legislation supports digital currency! These 6 compliant coins may become the focus of the next bull market Hong Kong legislation supports digital currency! These 6 compliant coins may become the focus of the next bull market Jul 23, 2025 pm 08:12 PM

The era of compliant crypto trading in Hong Kong has begun, and six potential currencies have attracted attention: 1. Bitcoin (BTC) is a must-have asset as digital gold; 2. Ethereum (ETH) has become the second largest compliance option with its strong ecosystem; 3. Ripple (XRP) has compliance potential due to its cross-border payment application and liquidity advantages; 4. ADA (ADA) meets regulatory preferences with its academic foundation and stability; 5. Litecoin (LTC) is regarded as a security option due to its long history and stable community; 6. Binance Coin (BNB) is likely to be selected based on its high market value and wide ecosystem. Investors can first trade these assets through mainstream platforms such as Binance, Ouyi, Huobi, and Gate.io to prepare for the future opening of the Hong Kong retail market.

What is a more common digital currency What is a more common digital currency Jul 23, 2025 pm 09:53 PM

Digital currency is a decentralized electronic currency based on blockchain technology. Its value is determined by market supply and demand. It is globally universal, transparent in transactions and has certain anonymity. 1. Binance is the largest platform in the world with transaction volume, providing rich currencies and a strong ecosystem. 2. OkX has a comprehensive product line, supporting derivatives trading and Web3 accounts, suitable for advanced users; 3. Huobi (Huobi/HTX) has a long history, is safe and stable, and is deeply trusted by old users; 4. Gat

2025 Cryptocurrency Market Outlook: How do policies, institutions and technological innovations affect trends? 2025 Cryptocurrency Market Outlook: How do policies, institutions and technological innovations affect trends? Jul 23, 2025 pm 10:15 PM

In 2025, the cryptocurrency market will be driven by three major factors: clear policy supervision, in-depth institutional participation and technological innovation. 1. The United States may introduce a comprehensive crypto bill, and global regulatory coordination (such as the EU MiCA) will enhance the legitimacy of the industry; 2. Institutional funds will enter large-scale through compliant products such as Bitcoin and Ethereum ETFs, and exchanges such as Binance, OKX, Huobi, Gate.io and Coinbase will serve as core infrastructure to undertake institutional traffic; 3. The popularization of Layer 2 network will promote the scale of applications, and the tokenization of real-world assets (RWA) is expected to inject trillion-dollar liquidity into DeFi. The integration of AI and crypto will give birth to a new paradigm, jointly driving the growth of the industry's intrinsic value.

See all articles