cassandra-cli 'list' in cassandra 3.0 - cassandra

Question

I want to view the "rowkey" with its stored data in cassandra 3.0. I know, the depreciated cassandra-cli had the 'list'-command. However, in cassandra 3.0, I cannot find the replacement for the 'list'-command. Anyone knows the new cli-command for 'list'?

Answer 1

You can use sstabledump utility as #chris-lohfink suggested. How to use it? Create keyspace, table in it populate some data:
cqlsh> CREATE KEYSPACE IF NOT EXISTS minetest WITH REPLICATION = { 'class' : 'SimpleStrategy', 'replication_factor' : 1 };
cqlsh> CREATE TABLE object_coordinates (
... object_id int PRIMARY KEY,
... coordinate text
... );
cqlsh> use minetest;
cqlsh:minetest> insert into object_coordinates (object_id, coordinate) values (564682,'59.8505,34.0035');
cqlsh:minetest> insert into object_coordinates (object_id, coordinate) values (1235,'61.7814,40.3316');
cqlsh:minetest> select object_id, coordinate, writetime(coordinate) from object_coordinates;
object_id | coordinate | writetime(coordinate)
-----------+-----------------+-----------------------
1235 | 61.7814,40.3316 | 1480436931275615
564682 | 59.8505,34.0035 | 1480436927707627
(2 rows)
object_id is a primary (partition key) key, coordinate is clustering one.
Flush changes to disk:
# nodetool flush
Find sstable on disk and analyze it:
# cd /var/lib/cassandra/data/minetest/object_coordinates-e19d4c40b65011e68563f1a7ec2d3d77
# ls
backups mc-1-big-CompressionInfo.db mc-1-big-Data.db mc-1-big-Digest.crc32 mc-1-big-Filter.db mc-1-big-Index.db mc-1-big-Statistics.db mc-1-big-Summary.db mc-1-big-TOC.txt
# sstabledump mc-1-big-Data.db
[
{
"partition" : {
"key" : [ "1235" ],
"position" : 0
},
"rows" : [
{
"type" : "row",
"position" : 18,
"liveness_info" : { "tstamp" : "2016-11-29T16:28:51.275615Z" },
"cells" : [
{ "name" : "coordinate", "value" : "61.7814,40.3316" }
]
}
]
},
{
"partition" : {
"key" : [ "564682" ],
"position" : 43
},
"rows" : [
{
"type" : "row",
"position" : 61,
"liveness_info" : { "tstamp" : "2016-11-29T16:28:47.707627Z" },
"cells" : [
{ "name" : "coordinate", "value" : "59.8505,34.0035" }
]
}
]
}
]
Or with -d flag:
# sstabledump mc-1-big-Data.db -d
[1235]#0 Row[info=[ts=1480436931275615] ]: | [coordinate=61.7814,40.3316 ts=1480436931275615]
[564682]#43 Row[info=[ts=1480436927707627] ]: | [coordinate=59.8505,34.0035 ts=1480436927707627
Output says that 1235 and 564682 and saves coordinates in those partitions.
Link to doc http://www.datastax.com/dev/blog/debugging-sstables-in-3-0-with-sstabledump
PS. sstabledump is provided by cassandra-tools package in ubuntu.