millerjp

#!/usr/bin/env bash
#
# cassandra-hotkey-replica-check.sh  (AxonOps)
#
# Read-only Cassandra diagnostic: map a cluster's tracked "hot" partitions
# to their replica sets, to test whether a set of misbehaving nodes is
# simply the replica set of the hottest keys.
#
# Requires Cassandra 4.1+ with top-partition tracking active (it is by
# default: top_partitions_enabled=true).

millerjp

#!/usr/bin/env bash
#
# Copyright 2026 AxonOps (https://axonops.com)
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#

millerjp

#!/usr/bin/env bash
#
# restore_snapshots.sh
#
# Restores Cassandra table data from auto-snapshots created when tables were
# dropped (auto_snapshot: true). Assumes tables have already been recreated
# with the same schema.
#
# What this does:
#   1. Finds old table directories containing dropped-* snapshots

millerjp

#!/usr/bin/env python3
"""
LWT Paxos Timing Issue - Comprehensive Reproduction (Python)

Demonstrates that DELETE after INSERT IF NOT EXISTS requires a delay
for Paxos consensus to complete.

To run:
    python3 lwt_timing_reproduction_python.py

millerjp

// LWT Paxos Timing Issue - Comprehensive Reproduction (Go)
//
// Demonstrates that DELETE after INSERT IF NOT EXISTS requires a delay
// for Paxos consensus to complete.
//
// To run:
//   go run lwt_timing_reproduction_go.go
//
// Prerequisites:
//   - Cassandra running on 127.0.0.1:9042

millerjp

Keybase proof

I hereby claim:

• I am millerjp on github.
• I am johnnydigitalis (https://keybase.io/johnnydigitalis) on keybase.
• I have a public key ASBvGSDtstLV_SGs4k2qZbDjzzH2zmgjgDc_knZj_fy29wo

To claim this, I am signing this object:

millerjp

#!/bin/bash

#This is the directory that teh sstables will be palce into load - the table name is also going to be changed from v2 to v4
WORKING_DIR=/somecompany/cassandra/data/sstable_loading_dir/someks/sometable_v4
COMPLETED_DIR=/somecompany/cassandra/data/sstable_completed_dir

mkdir -p $COMPLETED_DIR
mkdir -p $WORKING_DIR

rm -rf $WORKING_DIR/*

millerjp

#!/bin/bash
# Scipt to count connected hosts on port, preform nslookup of hosts and output details
#
HOSTNAME=`hostname`

PORT=$1

IP_HOSTS_COUNT=`netstat -tn | 'next unless(/^tcp\s+\d+\s+\d+\s+\S+?:${PORT}\s+(\S+)?:/); print "$1\n";' | sort | uniq -c | awk '{print "tohost\t",$1,"\t"$2,"\tfromhost\n"}'`

while read -r line; do

millerjp

#!/bin/bash
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#

millerjp

#!/bin/bash

# DANGER: ALL DATA WILL BE DELETED
# assumes disk order is consistent
# atobey@datastax.com 2015-05-09

export PATH=/bin:/sbin:/usr/sbin:/usr/bin:/usr/local/bin:/usr/local/sbin

die () { echo "FATAL: $*"; exit 1; }