Hello, I noticed an issue with bulk insert through map reduce in phoenix
4.4.0.2.3.0.0-2557, using outline of the code below
Normally the inserts of about 25 million rows complete in about 5 mins, there
are 5 region servers and the phoenix table has 32 buckets
But sometimes (maybe after major compactions or region movement?), writes
simply slow down to 90 mins, when I truncate SYSTEM.STATS hbase table, the
inserts get a little faster (60 mins), but when I truncate both SYSTEM.CATALOG
& SYSTEM.STATS tables, and recreate the phoenix table def(s) the inserts go
back to 5 mins, the workaround of truncating SYSTEM tables is not sustainable
for long, can someone help and let me know if there is a patch available for
this? Thanks in advance.
Job job = Job.getInstance(conf, NAME);
// Set the target Phoenix table and the columns
PhoenixMapReduceUtil.setOutput(job, tableName,
"WEB_ID,WEB_PAGE_LABEL,DEVICE_TYPE," +
"WIDGET_INSTANCE_ID,WIDGET_TYPE,WIDGET_VERSION,WIDGET_CONTEXT," +
"TOTAL_CLICKS,TOTAL_CLICK_VIEWS,TOTAL_HOVER_TIME_MS,TOTAL_TIME_ON_PAGE_MS,TOTAL_VIEWABLE_TIME_MS,"
+
"VIEW_COUNT,USER_SEGMENT,DIM_DATE_KEY,VIEW_DATE,VIEW_DATE_TIMESTAMP,ROW_NUMBER");
FileInputFormat.setInputPaths(job, inputPath);
job.setMapperClass(WidgetPhoenixMapper.class);
job.setMapOutputKeyClass(NullWritable.class);
job.setMapOutputValueClass(WidgetPagesStatsWritable.class);
job.setOutputFormatClass(PhoenixOutputFormat.class);
TableMapReduceUtil.addDependencyJars(job);
job.setNumReduceTasks(0);
job.waitForCompletion(true);
public static class WidgetPhoenixMapper extends Mapper<LongWritable, Text,
NullWritable, WidgetPagesStatsWritable> {
@Override
public void map(LongWritable longWritable, Text text, Context context)
throws IOException, InterruptedException {
Configuration conf = context.getConfiguration();
String rundateString = conf.get("rundate");
PagesSegmentWidgetLineParser parser = new
PagesSegmentWidgetLineParser();
try {
PagesSegmentWidget pagesSegmentWidget =
parser.parse(text.toString());
if (pagesSegmentWidget != null) {
WidgetPagesStatsWritable widgetPagesStatsWritable = new
WidgetPagesStatsWritable();
WidgetPagesStats widgetPagesStats = new WidgetPagesStats();
widgetPagesStats.setWebId(pagesSegmentWidget.getWebId());
widgetPagesStats.setWebPageLabel(pagesSegmentWidget.getWebPageLabel());
widgetPagesStats.setWidgetInstanceId(pagesSegmentWidget.getWidgetInstanceId());
…..
widgetPagesStatsWritable.setWidgetPagesStats(widgetPagesStats);
context.write(NullWritable.get(), widgetPagesStatsWritable);
}
}catch (Exception e){
e.printStackTrace();
}
}
}
public final class WidgetPagesStats {
private String webId;
private String webPageLabel;
private long widgetInstanceId;
private String widgetType;
…
@Override
public boolean equals(Object o) {
..
}
@Override
public int hashCode() {
..
}
@Override
public String toString() {
return "WidgetPhoenix{“….
'}';
}
}
public class WidgetPagesStatsWritable implements DBWritable, Writable {
private WidgetPagesStats widgetPagesStats;
public void readFields(DataInput input) throws IOException {
widgetPagesStats.setWebId(input.readLine());
widgetPagesStats.setWebPageLabel(input.readLine());
widgetPagesStats.setWidgetInstanceId(input.readLong());
widgetPagesStats.setWidgetType(input.readLine());
…
}
public void write(DataOutput output) throws IOException {
output.writeBytes(widgetPagesStats.getWebId());
output.writeBytes(widgetPagesStats.getWebPageLabel());
output.writeLong(widgetPagesStats.getWidgetInstanceId());
output.writeBytes(widgetPagesStats.getWidgetType());
..
}
public void readFields(ResultSet rs) throws SQLException {
widgetPagesStats.setWebId(rs.getString("WEB_ID"));
widgetPagesStats.setWebPageLabel(rs.getString("WEB_PAGE_LABEL"));
widgetPagesStats.setWidgetInstanceId(rs.getLong("WIDGET_INSTANCE_ID"));
widgetPagesStats.setWidgetType(rs.getString("WIDGET_TYPE"));
…
}
public void write(PreparedStatement pstmt) throws SQLException {
Connection connection = pstmt.getConnection();
PhoenixConnection phoenixConnection = (PhoenixConnection) connection;
//connection.getClientInfo().setProperty("scn",
Long.toString(widgetPhoenix.getViewDateTimestamp()));
pstmt.setString(1, widgetPagesStats.getWebId());
pstmt.setString(2, widgetPagesStats.getWebPageLabel());
pstmt.setString(3, widgetPagesStats.getDeviceType());
pstmt.setLong(4, widgetPagesStats.getWidgetInstanceId());
…
}
public WidgetPagesStats getWidgetPagesStats() {
return widgetPagesStats;
}
public void setWidgetPagesStats(WidgetPagesStats widgetPagesStats) {
this.widgetPagesStats = widgetPagesStats;
}
}
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