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Peter Bacsko edited comment on HADOOP-15822 at 10/5/18 8:58 PM: ---------------------------------------------------------------- [~jlowe] what a strange coincidence. I was also testing zstandard today and set {{mapreduce.task.io.sort.mb}} to 2047, which is the max I guess. Now the mapper was running on a 10GiB zstd compressed text file and then failed. The {{equator}} became a negative number and {{collect()}} threw {{ArrayIndexOutOfBoundsException}}. Mapper output compression was also enabled, probably that's what really matters here. It failed after like 40 minutes. I'm not sure whether it's zstd or not, because I haven't had the time to try it with other codecs, but it's something worth keeping in mind. was (Author: pbacsko): [~jlowe] what strange coincidence. I was also testing zstandard today and set {{mapreduce.task.io.sort.mb}} to 2047, which is the max I guess. Now the mapper was running on a 10GiB zstd compressed text file and then failed. The {{equator}} became a negative number and {{collect()}} threw {{ArrayIndexOutOfBoundsException}}. Mapper output compression was also enabled, probably that's what really matters here. It failed after like 40 minutes. I'm not sure whether it's zstd or not, because I haven't had the time to try it with other codecs, but it's something worth keeping in mind. > zstd compressor can fail with a small output buffer > --------------------------------------------------- > > Key: HADOOP-15822 > URL: https://issues.apache.org/jira/browse/HADOOP-15822 > Project: Hadoop Common > Issue Type: Bug > Affects Versions: 2.9.0, 3.0.0 > Reporter: Jason Lowe > Assignee: Jason Lowe > Priority: Major > Attachments: HADOOP-15822.001.patch, HADOOP-15822.002.patch > > > TestZStandardCompressorDecompressor fails a couple of tests on my machine > with the latest zstd library (1.3.5). Compression can fail to successfully > finalize the stream when a small output buffer is used resulting in a failed > to init error, and decompression with a direct buffer can fail with an > invalid src size error. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org