How to use Java code to delete graph indexes

[LiJie20190102]

I created a mix index and wanted to use Java code to delete it. I then referred to AA for code writing, but encountered an error when deleting it. Is there a problem with my usage?

https://docs.janusgraph.org/schema/index-management/index-removal/

[li-boxuan]

Can you try if https://docs.janusgraph.org/operations/recovery/#janusgraph-instance-failure works?

[LiJie20190102]

I can use the following code to delete it. I would like to ask if writing this way is consistent with Maintain consistency? If there are any issues with my code execution like this, I will try to fix the "Transaction Failure" issue in the way you said

[li-boxuan]

C.C. @rngcntr who developed DISCARD index feature, iirc

[rngcntr]

Hi @LiJie20190102!

The problem with your usage is that you are re-using the graphIndex object, which you created in a previous transaction. Any reference to an index only remains valid during the lifespan of the enclosing transaction. That's why the example you are following retrieves the index a second time by calling m.getGraphIndex("name").