sstablemetadata 

The sstablemetadata utility prints metadata about a specified SSTable.

The sstablemetadata utility prints metadata about a specified SSTable, including:
  • SSTable name
  • partitioner
  • SSTable level (for Leveled Compaction only)
  • number of tombstones and Dropped timestamps (in epoch time)
  • number of cells and size (in bytes) per row

Use this report to troubleshoot wide rows or performance-degrading tombstones.

Usage 

  • DataStax Enterprise 5.0 Installer Services and package installations:
    $ sstablemetadata <sstable_name filenames>
  • Cassandra tarball installations:
    $ cd install_location/resources/cassandra/tools
    $ bin/sstablemetadata <sstable_name filenames>
  • Cassandra package installations:
    $ sstablemetadata <sstable_name filenames>
  • Cassandra tarball installations:
    $ cd install_location/tools
    $ bin/sstablemetadata <sstable_name filenames>

Procedure

Enter the command sstablemetadata followed by the filenames of one or more SSTables.
$ sstablemetadata <sstable_name filenames>
tools/bin/sstablemetadata  data/data/autogeneratedtest/transaction_by_retailer-f27e4d5078dc11e59d629d03f52e8a2b/ma-203-big-Data.db
SSTable: data/data/autogeneratedtest/transaction_by_retailer-f27e4d5078dc11e59d629d03f52e8a2b/ma-203-big
Partitioner: org.apache.cassandra.dht.Murmur3Partitioner
Bloom Filter FP chance: 0.010000
Minimum timestamp: 1445871871053006
Maximum timestamp: 1445871953354005
SSTable max local deletion time: 2147483647
Compression ratio: -1.0
Estimated droppable tombstones: 0.0
SSTable Level: 0
Repaired at: 0
ReplayPosition(segmentId=1445871179392, position=18397674)
Estimated tombstone drop times:
2147483647:   7816721
Count               Row Size        Cell Count
1                          0                 0
2                          0                 0
3                          0                 0
4                          0                 0
5                          0                 0
6                          0                 0
7                          0                 0
8                          0                 0
10                         0                 0
12                         0            710611
14                         0                 0
17                         0                 0
20                         0                 0
24                         0                 0
29                         0                 0
35                         0                 0
42                         0                 0
50                         0                 0
60                         0                 0
72                         0                 0
86                         0                 0
103                        0                 0
124                        0                 0
149                        0                 0
179                        0                 0
215                        0                 0
258                        0                 0
310                       81                 0
372                   710530                 0
446                        0                 0
535                        0                 0
642                        0                 0
770                        0                 0
924                        0                 0
1109                       0                 0
1331                       0                 0
1597                       0                 0
1916                       0                 0
2299                       0                 0
2759                       0                 0
3311                       0                 0
3973                       0                 0
4768                       0                 0
5722                       0                 0
6866                       0                 0
8239                       0                 0
9887                       0                 0
11864                      0                 0
14237                      0                 0
17084                      0                 0
20501                      0                 0
24601                      0                 0
29521                      0                 0
35425                      0                 0
42510                      0                 0
51012                      0                 0
61214                      0                 0
73457                      0                 0
88148                      0                 0
105778                     0                 0
126934                     0                 0
152321                     0                 0
182785                     0                 0
219342                     0                 0
263210                     0                 0
315852                     0                 0
379022                     0                 0
454826                     0                 0
545791                     0                 0
654949                     0                 0
785939                     0                 0
943127                     0                 0
1131752                    0                 0
1358102                    0                 0
1629722                    0                 0
1955666                    0                 0
2346799                    0                 0
2816159                    0                 0
3379391                    0                 0
4055269                    0                 0
4866323                    0                 0
5839588                    0                 0
7007506                    0                 0
8409007                    0                 0
10090808                   0                 0
12108970                   0                 0
14530764                   0                 0
17436917                   0                 0
20924300                   0                 0
25109160                   0                 0
30130992                   0                 0
36157190                   0                 0
43388628                   0                 0
52066354                   0                 0
62479625                   0                 0
74975550                   0                 0
89970660                   0                 0
107964792                  0                 0
129557750                  0                 0
155469300                  0                 0
186563160                  0                 0
223875792                  0                 0
268650950                  0                 0
322381140                  0                 0
386857368                  0                 0
464228842                  0                 0
557074610                  0                 0
668489532                  0                 0
802187438                  0                 0
962624926                  0                 0
1155149911                 0                 0
1386179893                 0                 0
1663415872                 0                 0
1996099046                 0                 0
2395318855                 0                 0
2874382626                 0
3449259151                 0
4139110981                 0
4966933177                 0
5960319812                 0
7152383774                 0
8582860529                 0
10299432635                 0
12359319162                 0
14831182994                 0
17797419593                 0
21356903512                 0
25628284214                 0
30753941057                 0
36904729268                 0
44285675122                 0
53142810146                 0
63771372175                 0
76525646610                 0
91830775932                 0
110196931118                 0
132236317342                 0
158683580810                 0
190420296972                 0
228504356366                 0
274205227639                 0
329046273167                 0
394855527800                 0
473826633360                 0
568591960032                 0
682310352038                 0
818772422446                 0
982526906935                 0
1179032288322                 0
1414838745986                 0
Estimated cardinality: 722835