TitanDB index does not change

Question

I would like to delete the existing index and follow the steps in the documentation so far. At the moment, I do not have a separate indexing database. However, when I go to the step when you need to wait for the index status to change using m.awaitGraphIndexStatus, it waits for the change to forever and expires with the following error:

GraphIndexStatusReport[success=false, indexName='usernameComposite', targetStatus=DISABLED, notConverged={username=INSTALLED}, converged={}, elapsed=PT1M0.092S]

The same thing happens when I try to create a new one. Any ideas what might cause this?

I create indexes using the following code snippet:

graph.tx().rollback()
mgmt = graph.openManagement()
name = mgmt.getPropertyKey('username')
mgmt.buildIndex('username-composite', Vertex.class).addKey(name).unique().buildCompositeIndex()
mgmt.commit()
mgmt.awaitGraphIndexStatus(graph, 'username-composite').call()

Answer 1

gremlin-users, , . , , , .

graph.getOpenTransactions(), StandardTitanGraph, null, . , commit(), rollback() .

, Gremlin.

// Disable the index. Once the able is DISABLED, it cannot be re-enabled again!
// Instead, you could build a new index with the same properties.
future = null
if (graph.getOpenTransactions()) graph.tx().rollback()
mgmt = graph.openManagement()
name = mgmt.getPropertyKey('name')
nameIndex = mgmt.getGraphIndex('nameIndex')
nameIndexStatus = nameIndex.getIndexStatus(name) // must be ENABLED, INSTALLED, or REGISTERED
if (nameIndexStatus == SchemaStatus.INSTALLED || nameIndexStatus == SchemaStatus.ENABLED) future = mgmt.updateIndex(nameIndex, SchemaAction.DISABLE_INDEX)
nameIndexStatus = nameIndex.getIndexStatus(name) // should be INSTALLED here
mgmt.commit()

// Block until disabling index is complete (ENABLED -> INSTALLED -> DISABLED), no metrics are reported (null)
if (graph.getOpenTransactions()) graph.tx().rollback()
t = System.currentTimeMillis(); metrics = future.get(); 'disabled in '+(System.currentTimeMillis()-t)+' ms'
if (nameIndexStatus == SchemaStatus.ENABLED) mgmt.awaitGraphIndexStatus(graph, 'nameIndex').status(SchemaStatus.INSTALLED).call()
if (nameIndexStatus == SchemaStatus.INSTALLED) mgmt.awaitGraphIndexStatus(graph, 'nameIndex').status(SchemaStatus.DISABLED).call()

Answer 2

, . script . script Titan 1.0.0 Document

graph.tx().rollback() //Never create new indexes while a transaction is active
mgmt = graph.openManagement()
name = mgmt.getPropertyKey('name')
age = mgmt.getPropertyKey('age')
mgmt.buildIndex('byNameComposite', Vertex.class).addKey(name).buildCompositeIndex()
mgmt.buildIndex('byNameAndAgeComposite', Vertex.class).addKey(name).addKey(age).buildCompositeIndex()
mgmt.commit()
//Wait for the index to become available
mgmt.awaitGraphIndexStatus(graph, 'byNameComposite').call()
mgmt.awaitGraphIndexStatus(graph, 'byNameAndAgeComposite').call()
//Reindex the existing data
mgmt = graph.openManagement()
mgmt.updateIndex(mgmt.getGraphIndex("byNameComposite"), SchemaAction.REINDEX).get()
mgmt.updateIndex(mgmt.getGraphIndex("byNameAndAgeComposite"), SchemaAction.REINDEX).get()
mgmt.commit()

, graph.tx().rollback() .

gremlin> :> graph.getOpenTransactions()
==>standardtitantx[0x1e14c346]
==>standardtitantx[0x7a0067f2]
==>standardtitantx[0x0de3ee40]
==>standardtitantx[0x47e19812]
==>standardtitantx[0x27b20549]
==>standardtitantx[0x0ee46d99]
gremlin> :> graph.tx().rollback()
==>null
gremlin> :> graph.getOpenTransactions()
==>standardtitantx[0x1e14c346]
==>standardtitantx[0x7a0067f2]
==>standardtitantx[0x0de3ee40]
==>standardtitantx[0x47e19812]
==>standardtitantx[0x093ac20f]
==>standardtitantx[0x27b20549]
==>standardtitantx[0x0ee46d99]

. graph.tx().rollback()

// rollback all exist transactions
int size = graph.getOpenTransactions().size();
for(i=0;i<size;i++) {graph.getOpenTransactions().getAt(0).rollback()}

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