[SPARK-10354] [MLLIB] fix some apparent memory issues in k-means|| initializaiton#8526
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[SPARK-10354] [MLLIB] fix some apparent memory issues in k-means|| initializaiton#8526mengxr wants to merge 1 commit into
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…do not wrap Vector
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not calling BLAS here because runs == 1 in most cases
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Test build #41801 has finished for PR 8526 at commit
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The fix reduces around 50G RDD based on data size below. The performance is improved. The user needs more than 8G memory to run the kmeans in Spark1.5 based on this data size. The data size: |
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LGTM |
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…nitializaiton * do not cache first cost RDD * change following cost RDD cache level to MEMORY_AND_DISK * remove Vector wrapper to save a object per instance Further improvements will be addressed in SPARK-10329 cc: yu-iskw HuJiayin Author: Xiangrui Meng <meng@databricks.com> Closes #8526 from mengxr/SPARK-10354. (cherry picked from commit f0f563a) Signed-off-by: Xiangrui Meng <meng@databricks.com>
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…nitializaiton * do not cache first cost RDD * change following cost RDD cache level to MEMORY_AND_DISK * remove Vector wrapper to save a object per instance Further improvements will be addressed in SPARK-10329 cc: yu-iskw HuJiayin Author: Xiangrui Meng <meng@databricks.com> Closes #8526 from mengxr/SPARK-10354. (cherry picked from commit f0f563a) Signed-off-by: Xiangrui Meng <meng@databricks.com>
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…nitializaiton * do not cache first cost RDD * change following cost RDD cache level to MEMORY_AND_DISK * remove Vector wrapper to save a object per instance Further improvements will be addressed in SPARK-10329 cc: yu-iskw HuJiayin Author: Xiangrui Meng <meng@databricks.com> Closes #8526 from mengxr/SPARK-10354. (cherry picked from commit f0f563a) Signed-off-by: Xiangrui Meng <meng@databricks.com>
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@hujiayin Thanks for testing! Merged into master, branch-1.5, 1.4, and 1.3. |
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Further improvements will be addressed in SPARK-10329
cc: @yu-iskw @hujiayin