| package edu.uci.ics.hyracks.algebricks.core.rewriter.base; |
| |
| import java.util.Properties; |
| |
| public class PhysicalOptimizationConfig { |
| private static final int MB = 1048576; |
| private static final String FRAMESIZE = "FRAMESIZE"; |
| private static final String MAX_FRAMES_EXTERNAL_SORT = "MAX_FRAMES_EXTERNAL_SORT"; |
| private static final String MAX_FRAMES_EXTERNAL_GROUP_BY = "MAX_FRAMES_EXTERNAL_GROUP_BY"; |
| |
| private static final String DEFAULT_HASH_GROUP_TABLE_SIZE = "DEFAULT_HASH_GROUP_TABLE_SIZE"; |
| private static final String DEFAULT_EXTERNAL_GROUP_TABLE_SIZE = "DEFAULT_EXTERNAL_GROUP_TABLE_SIZE"; |
| private static final String DEFAULT_IN_MEM_HASH_JOIN_TABLE_SIZE = "DEFAULT_IN_MEM_HASH_JOIN_TABLE_SIZE"; |
| |
| private Properties properties = new Properties(); |
| |
| public PhysicalOptimizationConfig() { |
| int frameSize = 131072; |
| setInt(FRAMESIZE, frameSize); |
| setInt(MAX_FRAMES_EXTERNAL_SORT, (int) (((long) 256 * MB) / frameSize)); |
| setInt(MAX_FRAMES_EXTERNAL_GROUP_BY, (int) (((long) 256 * MB) / frameSize)); |
| |
| // use http://www.rsok.com/~jrm/printprimes.html to find prime numbers |
| setInt(DEFAULT_HASH_GROUP_TABLE_SIZE, 10485767); |
| setInt(DEFAULT_EXTERNAL_GROUP_TABLE_SIZE, 10485767); |
| setInt(DEFAULT_IN_MEM_HASH_JOIN_TABLE_SIZE, 10485767); |
| } |
| |
| public int getFrameSize() { |
| return getInt(FRAMESIZE, 32768); |
| } |
| |
| public void setFrameSize(int frameSize) { |
| setInt(FRAMESIZE, frameSize); |
| } |
| |
| public int getMaxFramesExternalSort() { |
| int frameSize = getFrameSize(); |
| return getInt(MAX_FRAMES_EXTERNAL_SORT, (int) (((long) 512 * MB) / frameSize)); |
| } |
| |
| public void setMaxFramesExternalSort(int frameLimit) { |
| setInt(MAX_FRAMES_EXTERNAL_SORT, frameLimit); |
| } |
| |
| public int getMaxFramesExternalGroupBy() { |
| int frameSize = getFrameSize(); |
| return getInt(MAX_FRAMES_EXTERNAL_GROUP_BY, (int) (((long) 256 * MB) / frameSize)); |
| } |
| |
| public void setMaxFramesExternalGroupBy(int frameLimit) { |
| setInt(MAX_FRAMES_EXTERNAL_GROUP_BY, frameLimit); |
| } |
| |
| public int getHashGroupByTableSize() { |
| return getInt(DEFAULT_HASH_GROUP_TABLE_SIZE, 10485767); |
| } |
| |
| public void setHashGroupByTableSize(int tableSize) { |
| setInt(DEFAULT_HASH_GROUP_TABLE_SIZE, tableSize); |
| } |
| |
| public int getExternalGroupByTableSize() { |
| return getInt(DEFAULT_EXTERNAL_GROUP_TABLE_SIZE, 10485767); |
| } |
| |
| public void setExternalGroupByTableSize(int tableSize) { |
| setInt(DEFAULT_EXTERNAL_GROUP_TABLE_SIZE, tableSize); |
| } |
| |
| public int getInMemHashJoinTableSize() { |
| return getInt(DEFAULT_IN_MEM_HASH_JOIN_TABLE_SIZE, 10485767); |
| } |
| |
| public void setInMemHashJoinTableSize(int tableSize) { |
| setInt(DEFAULT_IN_MEM_HASH_JOIN_TABLE_SIZE, tableSize); |
| } |
| |
| private void setInt(String property, int value) { |
| properties.setProperty(property, Integer.toString(value)); |
| } |
| |
| private int getInt(String property, int defaultValue) { |
| String value = properties.getProperty(property); |
| if (value == null) |
| return defaultValue; |
| else |
| return Integer.parseInt(value); |
| } |
| |
| } |