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https://issues.apache.org/jira/browse/PARQUET-186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ryan Blue resolved PARQUET-186.
-------------------------------
Resolution: Fixed
Fix Version/s: parquet-mr_1.6.0
Issue resolved by pull request 133
[https://github.com/apache/incubator-parquet-mr/pull/133]
> Poor performance in SnappyCodec because of string concat in tight loop
> ----------------------------------------------------------------------
>
> Key: PARQUET-186
> URL: https://issues.apache.org/jira/browse/PARQUET-186
> Project: Parquet
> Issue Type: Bug
> Components: parquet-mr
> Affects Versions: parquet-mr_1.6.0
> Reporter: Cristian
> Fix For: parquet-mr_1.6.0
>
>
> String concatenation for SnappyUtil.validateBuffer which is called in a tight
> loop from both compress/decompress.
> This shows up as taking 60% of time in the profiler
> {code}
> public static void validateBuffer(byte[] buffer, int off, int len) {
> Preconditions.checkNotNull(buffer, "buffer");
> Preconditions.checkArgument(off >= 0 && len >= 0 && off <= buffer.length
> - len,
> "Invalid offset or length. Out of buffer bounds. buffer.length=" +
> buffer.length
> + " off=" + off + " len=" + len);
> }
> {code}
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