java.lang.Object
- org.apache.cassandra.index.sai.QueryContext

```
@NotThreadSafe
public class QueryContext
extends java.lang.Object
```
Tracks state relevant to the execution of a single query, including metrics and timeout monitoring.
Fields here are non-volatile, as they are accessed from a single thread.

Field Summary

Fields
Modifier and Type	Field	Description
`long`	`balancedTreePostingListsHit`
`long`	`balancedTreePostingsDecodes`
`long`	`balancedTreePostingsSkips`
`long`	`balancedTreeSegmentsHit`
`long`	`executionQuotaNano`
`boolean`	`hasUnrepairedMatches`	`true` if the local query for this context has matches from Memtable-attached indexes or indexes on unrepaired SSTables, and `false` otherwise.
`long`	`partitionsRead`
`boolean`	`queryTimedOut`
`long`	`rowsFiltered`
`long`	`segmentsHit`
`long`	`sstablesHit`
`long`	`triePostingsDecodes`
`long`	`triePostingsSkips`
`long`	`trieSegmentsHit`

Constructor Summary

Constructors
Constructor Description

QueryContext(ReadCommand readCommand, long executionQuotaMs)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

void checkpoint()

long totalQueryTimeNs()

VectorQueryContext vectorContext()
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - executionQuotaNano
```
public final long executionQuotaNano
```
  - sstablesHit
```
public long sstablesHit
```
  - segmentsHit
```
public long segmentsHit
```
  - partitionsRead
```
public long partitionsRead
```
  - rowsFiltered
```
public long rowsFiltered
```
  - trieSegmentsHit
```
public long trieSegmentsHit
```
  - triePostingsSkips
```
public long triePostingsSkips
```
  - triePostingsDecodes
```
public long triePostingsDecodes
```
  - balancedTreePostingListsHit
```
public long balancedTreePostingListsHit
```
  - balancedTreeSegmentsHit
```
public long balancedTreeSegmentsHit
```
  - balancedTreePostingsSkips
```
public long balancedTreePostingsSkips
```
  - balancedTreePostingsDecodes
```
public long balancedTreePostingsDecodes
```
  - queryTimedOut
```
public boolean queryTimedOut
```
  - hasUnrepairedMatches
```
public boolean hasUnrepairedMatches
```
    true if the local query for this context has matches from Memtable-attached indexes or indexes on unrepaired SSTables, and false otherwise. When this is false, FilterTree can ignore the coordinator suggestion to downgrade to non-strict filtering, potentially reducing the number of false positives.
    
    See Also:
    
    QueryController.getIndexQueryResults(Collection)
- Constructor Detail
  - QueryContext
```
public QueryContext(ReadCommand readCommand,
                    long executionQuotaMs)
```
- Method Detail
  - totalQueryTimeNs
```
public long totalQueryTimeNs()
```
  - checkpoint
```
public void checkpoint()
```
  - vectorContext
```
public VectorQueryContext vectorContext()
```

Modifier and Type	Method	Description
`void`	`checkpoint()`
`long`	`totalQueryTimeNs()`
`VectorQueryContext`	`vectorContext()`

Class QueryContext

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

executionQuotaNano

sstablesHit

segmentsHit

partitionsRead

rowsFiltered

trieSegmentsHit

triePostingsSkips

triePostingsDecodes

balancedTreePostingListsHit

balancedTreeSegmentsHit

balancedTreePostingsSkips

balancedTreePostingsDecodes

queryTimedOut

hasUnrepairedMatches

Constructor Detail

QueryContext

Method Detail

totalQueryTimeNs

checkpoint

vectorContext