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8 Ways to Optimize AWS Glue Jobs in a Nutshell

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  Improving the performance of AWS Glue jobs involves several strategies that target different aspects of the ETL (Extract, Transform, Load) process. Here are some key practices. 1. Optimize Job Scripts Partitioning : Ensure your data is properly partitioned. Partitioning divides your data into manageable chunks, allowing parallel processing and reducing the amount of data scanned. Filtering : Apply pushdown predicates to filter data early in the ETL process, reducing the amount of data processed downstream. Compression : Use compressed file formats (e.g., Parquet, ORC) for your data sources and sinks. These formats not only reduce storage costs but also improve I/O performance. Optimize Transformations : Minimize the number of transformations and actions in your script. Combine transformations where possible and use DataFrame APIs which are optimized for performance. 2. Use Appropriate Data Formats Parquet and ORC : These columnar formats are efficient for storage and querying, signif
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4 Must read Blockchain Disadvantages for Consumers

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Here are the disadvantages of Blockchain. Below, you will find the list of these.

Blockchain Disadvantages

  1. Lack of privacy
  2. Loss of personal responsibility
  3. Loss of jobs
  4. Reintermediation

1. Lack of Privacy



Public blockchains do not hide any of their data. Instead, everyone can read the complete history of transactions. This level of transparency is frightening for those who want to protect their privacy.

These concerns are understandable when considering the level at which personal data are already collected and utilized by large corporations or intelligence agencies.




2. Loss of Responsibility



Loss of personal responsibility is often considered a consequence of disintermediation. Intermediaries not only bring different parties of a contract together but may also provide guarantees. They offer reconciliation in cases when transactions do not work out as intended, and they are also obliged to take responsibility for their actions.

The shift from trust in people and human organizations to trust in protocols and technology may lead to a loss of personal service and personal responsibility.




Disadvantages
Disadvantages



3. Loss of Jobs


Automation and standardization play a profound cause to lose many jobs. Third parties, such as banks, brokers, custodians, money-transfer agencies, and notaries directly tied to their roles as intermediaries.

All these jobs could be at risk when a sea portion of financial transactions automated by using Blockchain technology.

 


4. Reintermediation


The complexity and its open legal status discourage individuals and organizations from using Blockchain technology.

If people prefer third-party services instead of using Blockchain technology, it surely hurdles the real usage.


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