[jira] [Created] (IOTDB-2776) Improve the TsFileWriter's method: write(Tablet tablet)

["JiaXin Zhang (Jira)" <ji...@apache.org>]

JiaXin Zhang created IOTDB-2776:
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             Summary: Improve the TsFileWriter's method: write(Tablet tablet)
                 Key: IOTDB-2776
                 URL: https://issues.apache.org/jira/browse/IOTDB-2776
             Project: Apache IoTDB
          Issue Type: Improvement
          Components: Core/TsFile
            Reporter: JiaXin Zhang
            Assignee: JiaXin Zhang
             Fix For: master branch


By changing the method from the original write by row to write by column, the write performance of the method can be improved.The following is the test result:

*Test Configuration：*

The writing medium is HDD.
Scheme for writing data: <long(time), double(value)>
The written data is divided into two groups: A and B.
A：One device has 100 measuring points, and each measuring point inserts 100W lines.
B：One device has 1000 measuring points, and each measuring point inserts 100W lines.

write batchSize = 5000

*A：*
|| ||TsFile||TsFile(update)||
|Total file size(M):|172.48751544952393|172.48751544952393|
|time(ms)|1292.0548 ms|985.80145 ms|

*B:*
|| ||TsFile||TsFile(update)||
|Total file size(M):|1726.471918106079|1726.471918106079|
|time(ms)|20822.018 ms|10056.04|



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