sstablemetadata
The sstablemetadata utility prints metadata about a specified SSTable.
The
sstablemetadata utility prints metadata about a specified
SSTable. The utility displays metadata that includes:- sstable name
- partitioner
- RepairedAt timestamp (for incremental repairs only)
- sstable level (for Leveled Compaction only)
- number of tombstones and Dropped timestamps (in epoch time)
- number of cells and size (in bytes) per row
Such data can be useful for troubleshooting wide rows or performance degrading tombstones.
Procedure
Run the
sstablemetadata command. Multiple SSTable filenames
can be included in the command.
- Cassandra Package installations:
sstablemetadata <sstable_name filenames>
- Cassandra Tarball installations:
cd install_location/tools $ bin/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