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18 package org.apache.hadoop.hbase.regionserver;
19
20 import org.apache.hadoop.conf.Configuration;
21 import org.apache.hadoop.hbase.HConstants;
22 import org.apache.hadoop.hbase.HTableDescriptor;
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33 public class ConstantSizeRegionSplitPolicy extends RegionSplitPolicy {
34 private long desiredMaxFileSize;
35
36 @Override
37 protected void configureForRegion(HRegion region) {
38 super.configureForRegion(region);
39 Configuration conf = getConf();
40 HTableDescriptor desc = region.getTableDesc();
41 if (desc != null) {
42 this.desiredMaxFileSize = desc.getMaxFileSize();
43 }
44 if (this.desiredMaxFileSize <= 0) {
45 this.desiredMaxFileSize = conf.getLong(HConstants.HREGION_MAX_FILESIZE,
46 HConstants.DEFAULT_MAX_FILE_SIZE);
47 }
48 }
49
50 @Override
51 protected boolean shouldSplit() {
52 boolean force = region.shouldForceSplit();
53 boolean foundABigStore = false;
54
55 for (Store store : region.getStores().values()) {
56
57
58 if ((!store.canSplit())) {
59 return false;
60 }
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63 if (store.getSize() > desiredMaxFileSize) {
64 foundABigStore = true;
65 }
66 }
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68 return foundABigStore || force;
69 }
70
71 long getDesiredMaxFileSize() {
72 return desiredMaxFileSize;
73 }
74 }