org.apache.hadoop.hbase.regionserver

Interface CompactionRequestor

All Known Implementing Classes:

CompactSplitThread

@InterfaceAudience.Private
public interface CompactionRequestor

Method Summary

Methods

Modifier and Type	Method and Description
CompactionRequest	requestCompaction(HRegion r, Store s, String why, CompactionRequest request)
CompactionRequest	requestCompaction(HRegion r, Store s, String why, int pri, CompactionRequest request)
List<CompactionRequest>	requestCompaction(HRegion r, String why)
List<CompactionRequest>	requestCompaction(HRegion r, String why, int pri, List<Pair<CompactionRequest,Store>> requests)
List<CompactionRequest>	requestCompaction(HRegion r, String why, List<Pair<CompactionRequest,Store>> requests)

Method Detail

requestCompaction

List<CompactionRequest> requestCompaction(HRegion r,
                                        String why)
                                          throws IOException

Parameters:

r - Region to compact

why - Why compaction was requested -- used in debug messages

Returns:

The created CompactionRequests or an empty list if no compactions were started

Throws:

IOException

requestCompaction

List<CompactionRequest> requestCompaction(HRegion r,
                                        String why,
                                        List<Pair<CompactionRequest,Store>> requests)
                                          throws IOException

Parameters:

r - Region to compact

why - Why compaction was requested -- used in debug messages

requests - custom compaction requests. Each compaction must specify the store on which it is acting. Can be null in which case a compaction will be attempted on all stores for the region.

Returns:

The created CompactionRequests or an empty list if no compactions were started

Throws:

IOException

requestCompaction

CompactionRequest requestCompaction(HRegion r,
                                  Store s,
                                  String why,
                                  CompactionRequest request)
                                    throws IOException

Parameters:

r - Region to compact

s - Store within region to compact

why - Why compaction was requested -- used in debug messages

request - custom compaction request for the HRegion and Store. Custom request must be null or be constructed with matching region and store.

Returns:

The created CompactionRequest or null if no compaction was started.

Throws:

IOException

requestCompaction

List<CompactionRequest> requestCompaction(HRegion r,
                                        String why,
                                        int pri,
                                        List<Pair<CompactionRequest,Store>> requests)
                                          throws IOException

Parameters:

r - Region to compact

why - Why compaction was requested -- used in debug messages

pri - Priority of this compaction. minHeap. <=0 is critical

requests - custom compaction requests. Each compaction must specify the store on which it is acting. Can be null in which case a compaction will be attempted on all stores for the region.

Returns:

The created CompactionRequests or an empty list if no compactions were started.

Throws:

IOException

requestCompaction

CompactionRequest requestCompaction(HRegion r,
                                  Store s,
                                  String why,
                                  int pri,
                                  CompactionRequest request)
                                    throws IOException

Parameters:

r - Region to compact

s - Store within region to compact

why - Why compaction was requested -- used in debug messages

pri - Priority of this compaction. minHeap. <=0 is critical

request - custom compaction request to run. Store and HRegion for the request must match the region and store specified here.

Returns:

The created CompactionRequest or null if no compaction was started

Throws:

IOException