HBase Table Size Reporter

This Python script reports the HDFS disk usage of HBase tables based on a given table name prefix. It calculates the table size with and without the replication factor and generates a human-readable report in both text and CSV formats.

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🔧 Features

• Accepts one or more table name prefixes as input.
• Lists all HBase tables in HDFS that start with each prefix.
• Calculates:
  • Raw HDFS size
  • Size with replication factor (default is 3)
• Outputs:
  • Formatted console output
  • Consolidated report.txt
  • Consolidated report.csv
• Sizes shown with up to 4 decimal places

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🧩 Prerequisites

• Python 3.x

• Hadoop command line tools configured (hadoop fs should work)

• humanize Python module:

  Install it via pip:

      pip install humanize

🚀 Usage bash

python3 script.py <table_prefix1> <table_prefix2> ...

Example:

python3 script.py meta person

📂 Output report.txt: Pretty-formatted human-readable report for all table prefixes.

report.csv: CSV file suitable for spreadsheets or further analysis.

Both files include:

Table name

Size without replication

Size with replication

Per-prefix totals

Final total at the bottom

🛠️ Configuration You can change the HDFS base directory or replication factor by modifying these lines in the script:

HDFS_BASE_DIR = "/hbase/data/hbase"
REPLICATION_FACTOR = 3

📌 Notes Tables with 0 bytes (likely empty or non-existent) are still shown in the output for completeness.

Final totals are computed separately for each prefix and also overall at the end.