[CP] build_version buffer_size
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		@ -871,8 +871,9 @@ int ObOptimizerTraceImpl::trace_env()
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  int ret = OB_SUCCESS;
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  char buf[1024+1] = {0};
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  int64_t buf_len = 1024;
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  get_package_and_svn(buf, buf_len);
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  if (OB_FAIL(new_line())) {
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  if (OB_FAIL(get_package_and_svn(buf, buf_len))) {
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    LOG_WARN("fail to get build_version", KR(ret));
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  } else if (OB_FAIL(new_line())) {
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    LOG_WARN("failed to append msg", K(ret));
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  } else if (OB_FAIL(append_key_value("Version", ObString(strlen(buf), buf)))) {
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    LOG_WARN("failed to append msg", K(ret));
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