StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POCheck via Hector if secondary index already exists for a dynamic column in Cassandra
primarykey
Id
16402682
data
AcceptedAnswerId
16436838
AnswerCount
1
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2013-05-06T16:09:18.117
FavoriteCount
0
LastActivityDate
2013-05-08T09:15:54.800
LastEditDate
2013-05-06T16:23:32.660
LastEditorUserId
2012441
OwnerUserId
2012441
ParentId
0
PostTypeId
1
Score
0
ViewCount
409
LastEditorDisplayName
text
Body
After the data import to my Cassandra Test-Cluster I found out that I need secondary indexes for some of the columns. Since the data is already inside the cluster, I want to achieve this by updating the ColumnFamilyDefinitions. Now, the problem is: those columns are dynamic columns, so they are invisible to the getColumnMetaData() call. How can I check via Hector if a secondary index has already been created and create one if this is not the case? (I think the part how to create it can be found in <a href="http://comments.gmane.org/gmane.comp.db.hector.user/3151" rel="nofollow">http://comments.gmane.org/gmane.comp.db.hector.user/3151</a> ) If this is not possible, do I have to copy all data from this dynamic column family into a static one?
Tags
<indexing><cassandra><hector><dynamic-columns>
Title
Check via Hector if secondary index already exists for a dynamic column in Cassandra
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USmschenk74
UserOwnerUserId
1. USmschenk74
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId
1. This table or related slice is empty.

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.